That's probably more likely yeah, but I guess it depends how he's received, how he plays in any friendlies, and also whether any of our current players step up and show that they can be captain. So far in friendlies we've had Bent, Delph and Bannan as captain, but it's far from clear who Lambert will go with permanently!
He's captained Feyenoord and was seen as a "figurehead and true leader", so despite only just signing i'd say he's more likely than a fair few of our current players, even if a less likely than some others.
Bent would be a good shout maybe, Gabby just due to the length of time he's been here, Dunne, although it's hard to say when we don't really know what kind of part Dunne will play under Lambert, it seems more likely he'll stay though over Collins. Given Maybe, although he's a little less likely than an outfield player I think. I reckon these would be the only possible candidates that'd be above Vlaar to be honest!