So if we get Vermaelen, do people think he'll be a back up? Also, does that rule us out of signing a left back, seeing as we've given Evra a one year contract extension, and Vermaelen can cover in that position? Van Gaal likes his defensive full backs so it'd probably make sense.
Defensive Options
Left Back (LB) - Evra/Vermaelen
Left Centre Back (LCB) - Evans/Vermaelen
Right Centre Back (RCB) - Smalling/Jones
Right Back (RB) - Rafael/Jones
We are going to need more than 6 defenders to cover the 4 positions, especially considering how injury prone our current options are. 8 would likely be sufficient. I very much doubt signing Vermaelen would have any effect on a deal for Luke Shaw.