Arsenal hero Martin Keown is convinced Mesut Ozil has transformed his old club into a title challenger.

Keown says the former Real Madrid midfielder's arrival can give Arsenal the jolt they need.

He told the Daily Mail: "People shouldn't underestimate the effect of a big-name player arriving at a club. Everybody will be buzzing that a player of that calibre is now in their midst. Everyone raises their game.

"It was the same for us when Dennis Bergkamp arrived. It's interesting that Ozil said he has come to work with Arsene Wenger. It's a reminder to the fans just how revered Wenger is."

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