If we're looking for a ball playing/pacey CB to replace Colo, I'd go for him. Not young, but has good pace, can play a good part in an attack, and has good ability on the ball. Plus he's also quite strong and good in the air. I know we've been after a good CB for a while, but if we're looking to sign someone to replace Colo, I'd go for him. If we truly want to replace Colo properly, we'll have to spend. Douglas and Mbia would be a cracking pair of CB's.
Mbia is a DM surely Tash? Sissokho is probably a better option for us, but I do agree he's a good player!