Dave Whelan will intensify the search for a new manager at Wigan Athletic this week, with 15 candidates likely to be considered as the replacement for Roberto Martínez.

The Wigan chairman travelled to Jersey shortly after agreeing compensation with Everton for Martínez last week, having agreed to parade the FA Cup there, but has returned to oversee a rapid interview process that he hopes will reveal the outstanding candidate within days.

The former Manchester United assistant manager Mike Phelan and coach Rene Meulensteen, and the ex-Bolton manager Owen Coyle, are under consideration for the task of winning immediate promotion to the Premier League next season.

Whelan said: "I've been in Jersey for four days and I couldn't do anything before that because we had to agree compensation with Everton. I wouldn't interview one soul until compensation was agreed. It's all done now so I am starting interviewing and I've got probably 14 to 15 to do this week and I want somebody appointed within the week.

"He's got one job and that is to get Wigan Athletic promoted. We have a lot to do before next season when we have a lot of matches to play. I've got people in my mind but it's not closed, you never know who comes later. It's amazing how many people want to manage Wigan Athletic."

The FA Cup holders, meanwhile, are to receive only 15,000 tickets for the Community Shield on 11 August, 20,000 tickets fewer than their opponents, Manchester United. The Football Association general secretary, Alex Horne, said: "Wigan's allocation is based on the attendances across their two visits to Wembley last season."