face Arsenal on Tuesday night in the Nou Camp in what is one of the most eagerly anticipated clashes of the season, as the heavyweights battle for a place in the Champions League semi-finals.

The dominant story going into the game, however, is not which stars will shine, but just how many will be sidelined.

Zlatan Ibrahimovic became the latest big name to be ruled out of the clash after injuring his thigh in the warm-up for Barcelona's victory over Athletic Bilbao on Saturday. The Swedish striker scored both of Barca's goals at the Emirates last week in a thrilling 2-2 draw.

Barcelona were already deprived of Gerard Pique and Carles Puyol for the second leg due to suspension, and now have Yaya Toure doubtful with an ankle injury while Andres Iniesta might also not be ready to make his return in time.

The injury list is just as daunting for Arsenal. Captain Cesc Fabregas was already suspended for the trip to the Nou Camp even before being ruled out for the season with a cracked bone in his leg. William Gallas was stretchered off against Barca and Andrey Arshavin is also sidelined, joining long-term absentee Robin Van Persie.

Astonishingly, it means Arsenal are without four of their top SIX players according to the Castrol Rankings, while Barcelona are missing three of their top six - with Barca's trio all ranked in the top 20 OVERALL.