By Chris Harris

Arsène Wenger believes his decision to bring Sol Campbell back to Arsenal has been vindicated.

The centre-back provided the shock of the transfer window when he re-signed for the club he left in May 2006 but Campbell has already made four appearances and scored what could prove to be a vital away goal in Porto two weeks ago.

With William Gallas sidelined, Campbell is expected resume his first-leg partnership with Thomas Vermaelen on Tuesday night as Arsenal chase a place in the last eight of the Champions League. And Wenger is delighted with what he has seen from his January swoop.

"It was unexpected that Sol would play so many games, but it is also good because I think it was the right decision to bring him back," said Wenger. "Sol is a guy who gives everything when he is on the pitch.

"Can his body still take two or three games in a week? Who knows. But we have a good mixture with him and [Mikael] Silvestre because he is also a player who gives everything on the pitch, so we can rotate them. The only problem is that when you play with two left-footed players sometimes Vermaelen is not always in his best position.

''Sol wants to win and he can spread that through the team and give advice. We want to win this game [against Porto] but we also need to be patient maybe and it is important to keep your head. He gives us a good mixture, it is not only him, but there is a good blend of youth and experience."

Campbell will be 36 in September but, on recent evidence, few would bet against him staying in the Premier League. Could that be with Arsenal? Wenger refused to be drawn on the matter.

"As you [the media] say many times, we haven't won anything yet," he said. "So let's focus on that. Let's focus on winning something first and then we see what we do with the players."

Copyright 2014 The Arsenal Football Club plc. Permission to use quotations from this article is granted subject to appropriate credit being given to www.arsenal.com as the source 9 Mar 2010