Arsenal boss Arsene Wenger is delighted with the progress being made by Brazilian midfielder Denilson.

"I am pleased, very pleased," he told arsenal.com after Denilson penned a new deal. "Denilson is a great player. For me, he is underrated. He does not get all the praise his performances suggest but that will come very quickly.

"He is the youngest player of our squad along with Armand Traore. He has played big games but he has shown he can cope with the pressure and produce quality performances. I expect him to make a big impact."