Arsenal boss Arsene Wenger can't see Manchester United counterpart Sir Alex Ferguson sticking to his claims he will retire in two years' time.

"He has said that for 10 years now," Wenger said. "The passion is still there. So I think his retirement will more be decided by physical capacities. Will he still want the stress or not? I think he will be motivated until the last day of his life."

Ferguson joined Manchester United in November 1986 and has managed the club to 20 major titles: 10 in the league, five in the FA Cup, two in the League Cup, two in the Champions League and one in the European Cup Winners' Cup.

"I think he comes to an age where you have to consider," added Wenger. "I didn't see any signs out this season that he's ready to retire."