Arsenal boss Arsene Wenger says it's crazy to compare Theo Walcott with Aston Villa midfielder James Milner.

The pair face-off tonight with Walcott criticised for his performance in the FA Cup defeat at Stoke City.

"Theo is 20. Milner is 24 - give him [Walcott] three years and then you will see," Wenger arsenal.com. "There is a massive difference between 20 and 24 - that is where you see the evolution of a player.

"People forget how young Theo is. I believe he has improved a lot but this season he has been unlucky.

"He has played three games this year. You cannot be at the top of your game for a striker with three games in six months - that does not exist. He needs a bit of luck."