Good morning. Ewan Murray will be online from 2pm BST to take part in a live webchat. If you have any questions about tonight's game between Barcelona and Celtic, drop them in the comments section below.
As Ewan reported in his preview to tonight's fixture, Neil Lennon has fared well in his previous trips to Barcelona:
As career records go, Neil Lennon's at Camp Nou stands up to pretty close scrutiny. In two visits, the Northern Irishman remains undefeated. Celtic's current manager was a player with the Scottish club when they ousted Barcelona from the Uefa Cup in 2004. Lennon and his teammates claimed an unlikely second-leg scoreless draw in Catalonia, despite an onslaught of Barcelona pressure.
Eight months later, Lennon again donned green and white as Celtic earned a Champions League group stage point at the home of the team now widely regarded as the best in world club football. Read more
Celtic have started well in Group G. They held Benfica to a draw in Glasgow and then won away at Spartak Moscow. However, Lennon is well aware of the task facing his men tonight: "Barcelona make great teams look ordinary... There is anxiety there. I've thought about nothing else. You are wary of being embarrassed. I certainly don't want that."
If you have any questions for Ewan, drop them into the comments section below.
Ewan Murray is in the comments section below answering questions about Barcelona v Celtic:
"Afternoon all. The sun is splitting the Catalan skies outside but obviously there is no place I'd rather be than right here, right now... Celtic are in that rare position of being massive underdogs in a match, but also in the fortunate one of being in a pretty decent Group G place after the first two games.... now, fire away (and play nicely, please)..."
virilegames asks: "Ewan, do you think the absence of Rangers from the SPL will help or hinder Celtic's chances of progression in the Champions League?"
In the short-term, it should make little or no difference at all. Longer-term, there could be an issue – Rangers themselves routinely complained about the lack of domestic competition they faced when cantering to league titles (but toiling in Europe) during the 1990s.
EminEmma29 asks: "Any clues who will play at the back for Barcelona tonight?"
Local chat yesterday suggested the 21-year-old Marc Bartha could play at centre-back, if the manager views this game as an ideal chance to hand him some more experience. The full-back positions are less of an issue; Barca still have Montoya, Alba and Adriano available. Neil Lennon believed Barca's defensive "crisis" has been over-egged. Time will tell...
wentoutwithoutahat1 asks: "Lionel Messi has scored 17 hat-tricks for Barcelona. How many more will he score tonight?"
And what is it... 71 goals in 2012? They are somewhat infatuated with the little fella in these parts, funnily enough...
LordBrett: "Barcelona's defence is the weakest I've seen in years. Celtic have a great chance for a decent result, but they still have to be disciplined or they will be embarrassed. Barca shipped four goals at the weekend but still won."
You touch on this, but the issue is, even if they lose two goals, they can readily score three. Lost four, score five etc etc. 10 goals lost in their last six matches... but still undefeated all season (Spanish Super Cup aside).
unbeautifulgame: "I had to laugh when I heard Lennon went to the game against Deportivo at the weekend, had a little chuckle when it was 3-0 after 18 minutes wondering what he might be thinking at that stage ("Can we play with six centre-backs and four full-backs?") How on earth do you think Lennon plans to stop Barcelona totally annihilating his Celtic Bhoys tonight?"
I'm probably best to quote Neil Lennon himself: "This is the ultimate challenge but you have to change the way you play. We're not going to have the ball. We're not going to be able to play through them, we're going to have to have an out ball at some stage which is why Samaras is going to be important at some stage, and all my forward-thinking players.
"Samaras will be very important because of his physical attributes as well as the football he brings to the team. We look at big side at times, that's maybe one department where we can maybe affect Barcelona particularly at set-pieces but our delivery has to be right. And you hope we get a fucking set-piece in the game..."
JustDontDoIt asks: "Have Barcelona been paying much respect to Celtic over in interviews and in the press? I imagine they probably couldn't even name five players in Celtic's team. Could that be to their disadvantage?"
To be fair, Vilanova was highly respectful towards Celtic during his press conference yesterday. He went so far as to suggest he actually feared Celtic's attacking pace and power. Now that could of course be a typical pat on the head, but it sounded sincere enough.
Vilanova said: "Celtic will wait for us at the back and then hit on the break. They proved against Spartak in Moscow that when they do this, they do it with real pace. They showed that again in their game at the weekend. They will have pace in all positions and will be good on set plays. We've seen how worrying they can be with their aerial play."
brenndoggz asks: "What do you think of the deployment of Charlie Mulgrew in Europe this year as a midfielder – is a good thing or too defensive? Wilson and Ambrose don't fill me with trust at the back and would rather see Mulgrew in there and Joe ledley in midfield."
I thought Mulgrew the best player in Scotland last season and voted for him as player of the year. But... I think he can be exposed a bit at a higher level defensively, more so at left-back than centre-half from what I have seen. His delivery, as you allude to, is excellent which makes him a valuable attacking weapon.
Wilson has recovered from a shaky start at Celtic to impress me this season. The early signs on Ambrose suggest he could be a real find. I would regard that pairing as Celtic's best at centre-back for European games.
angusmacwilliam asks: "Have Celtic put their awayday hoodoo behind them after the result in Moscow? If Hooper scores tonight, he'll be sold in the next window for a hugely inflated price."
Afternoon Gus.... we are guilty in the press of writing about these hoodoos, when of course they largely involve different sets of players (what happens in 2012 can't really be compared to 2002). Celtic's current one, which is relatively young, seem to play confidently and without fear away from home. Now they have got into the habit of doing well on their travels they can build on that.
Regardless of tonight, Hooper is guaranteed to be on the radar of English clubs. He was outstanding in Moscow. Celtic have been very good for his career and he has been very good for Celtic; I'd be very surprised if he was still in green and white this time next year.
jonnyhero asks: "I know they'll get tanked tonight in all probability, but given the young average age of this side, and the fact that they've held on to pretty much all their best players, how far can this Celtic side go in the next couple of years?"
That's a good question. It would depend again, of course, on how long a lot of these players (Wanyama, Kayal, Hooper, Forster etc) hang around for and the level of success Celtic have with replacements as and when they move on. This is quite a promising example of a young team which has developed and continues to develop together. That said, I still think getting beyond the last 16 is an exceptionally tough ask for any Scottish team, as history has told us.
Gabriel Piller asks: "Will most teams facing Barcelona will play an ultra-defensive, deep-lying game from now on, after Chelsea's success last season? Will this be something they will have to deal with in European competition from now on?"
And Inter were successful with the same, weren't they? Closer to home, I've seen Scotland try it against the likes of the Czech Republic, Spain and Belgium but lose pretty tamely anyway.
I think Barca are already accustomed to dealing with that. It makes fixtures such as tonight fascinating, though, when the home team are supposedly "weak" in defence. Even amid those claims, no team will come out and have a total charge at them for fear of being thumped.
Carlb1501 asks: "If Celtic could pull of the near impossible and get a win tonight would they proclaim themselves the best team in the world as Scotland did upon beating the then-world champions England all those years ago."
Haha, and where would such a result stand in the grand scheme of things? Against the best club side of all-time, but "only" in a group match as opposed to a knock-out fixture..?
A few people mentioning odds for tonight. Bit of value from William Hill – 9/2 h/t draw, f/t Barcelona. 10/1 the draw probably the one which stands out for a single match bet (I should put a disclaimer here, shouldn't I...?)
ss2134 muses on the asking price for Gary Hooper if he scores against Barcelona tonight: "Given Liverpool will could be buying, you could get at least £40 million."
Joking aside, there has been a lot of disrespectful stuff said about players who do well in the SPL. Jelavic has proved at Everton that he was as good a player as people up north said he was; I believe Hooper could have a similar impact in the Premier League.
Right, on that note I am off for a siesta (when in Rome, or Barcelona, etc). I reckon Celtic will score tonight, but all logic still suggests they will still lose by a couple of goals and Barca will take a big step towards the last 16 in the process. Hope everyone enjoys the match, and that the press box wifi works...
We'll leave the comments open here for the discussion to continue, but there are plenty of articles about the Champions League fixtures elsewhere on the site.
In case you missed it earlier, here is Ewan's preview from Barcelona.
And finally, here is Rob Smyth on how he fell in love with Roy Keane.
Thanks for all your comments and questions.