I think he was better then he is getting credit for here. I would give him a 7.5
Our defence in general was often disjointed and inconsistent during his time with us, sure , we were even playing Wes Brown in central defence!
He never got a chance to forge a partnership in central defence and in any case I have better memories of him at left back where he would have his work cut out in replacing the 10/10 Denis irwin.
Injuries didn't help his cause at times.
That said, he did carry a Jones like glazed look which gave an impression of uncertainty.
He was a good defender for us during a time where our defence suffered regular inconsistency. This only changed when Vidic and Evra settled and found form alongside Rio maturing.