Cesc was critical earlier this week of the inexperience of Wenger's squad, but he told arsenal.com: "Arsène has built an unbelievable squad here.
"We have great spirit and I have complete trust in the manager's policy.
"Arsène is the best at giving youngsters a chance. No-one else comes close to him for that. He doesn't care how old you are, as long as you are good enough and has the confidence to give young players a chance.
"Anything said to the contrary is simply not true and I would like to reiterate to all Arsenal supporters that I am 100 per cent behind the team and the manager.
"Yes we do have a lot of young players, but they have all shown they can handle it at the top level in the Premier League and Champions League.
"It's hard to imagine I'm one of the oldest players at the Club now but it will be a privilege to help guide some of these youngsters through.
"We're the envy of every other club and it's so exciting to be a part of that."