Former Arsenal defender Sol Campbell has warned his old club not to underestimate FA Cup semifinal opponents Wigan Athletic.

Campbell insists Wigan are capable of pulling off a Wembley upset.

He told the London Evening Standard: "I've got this message to the Arsenal team against Wigan - respect them - just respect the team you're playing against.

"This Wigan side has achieved upsets before, and if you start disrespecting their team and if you start disrespecting the FA Cup there could be trouble. Arsenal players shouldn't think they're not going to be on the receiving end of another cup upset by Wigan - because they could be."