Campbell to face Tottenham with Arsenal
Wenger believes Campbell has been one of the keys to Arsenal's continued title surge.
Wenger said: "Sol has been a big support for me and the squad. He is very important in the dressing room because he is highly focused and highly motivated. Every time he has played he has turned in a very good performance. It is one of the good signings I have made.
"I have no concerns about him. He will play tomorrow. I didn't imagine he would play as many games as he has. I thought he would play in one or two games maybe but he got those extra matches because he played well."