Arsenal manager Arsene Wenger has admitted his side will need strengthening in the summer after they were humbled by Barcelona in the Champions League quarter-finals.

He said: 'We have to add something, for sure, but we have some time to think about that," he admitted. "We are at a stage where we're developing players.

'[Theo] Walcott is 22; [Nicklas] Bendtner is 22; [Samir] Nasri, [Abou] Diaby and Denilson are 22 or 23. They've shown some great qualities and they'll get stronger every year.

'We were very young and what we did was very positive. We had six or seven players under 23 in the team and we had plenty of opportunities. We showed we lacked maturity in the weight of the final ball.'