Barcelona midfielder Alex Hleb admits he regrets leaving Arsenal.
"Of course I regret leaving Arsenal," he said in the interview with ESPN.
"I was playing every week for one of the most exciting sides in Europe, a team that was always in the top four in the Premier League and were Champions League contenders.
"I was being guided by one of the best coaches in the world in Arsene Wenger. I owe him a great deal.
"I developed a better all-round game under him and I became more robust physically, learned to look up more and play better passes and generally improved greatly as a team player. No player ever gets worse under Wenger."