Arsenal boss Arsene Wenger admits it's tough watching the Champions League semifinals this week.

"Yes, I'll watch the matches," said the Arsenal manager. "It will be extremely painful because it's our biggest disappointment since I have been here. We should be through despite all that happened. And we have never moved out of a Champions League stage having produced two outstanding games like we did.

"If you are played off the park and the team is better than you, then you accept it but when you produce the two performances we produced and lose the games, it is much more difficult to take. I feel we had the potential to win the Champions League and the title this year."