I'd like to see Ricketts at CB at some stage as he does get skinned by pacy wingers, but I do like his all round play a lot and he did a great job last time but one thing Knight does have is pace and helluva long legs to get tackles in and much-needed height at corners (both ends). Plus he's not too reckless and doesn't give away stupid free kicks/pens too often.
Ream apparently has pace, but the rest has yet to be seen - some not too favourable reports from the States suggest he has flaws. The main thing is we're not short of CBs from which to find a workable combo.
If we had Alonso we'd have decent pace both sides and I'd be a lot happier as NRC/Muamba in tandem tend to force opposition wide. If only our wingers could tackle back and cover properly we'd then be as tight as a fish's asshole in defence (and that's watertight).
With Mavies in the middle and two hard-working wingers interchanging with the fullbacks we'd be as good as we're going to get.