I'm guessing Thomas/Bredeson/Feliciano/Glowinski/Neal with Gates as the swing tackle. Personally I'd prefer Gates at center and Feliciano on the bench. Gates can play that extra lineman position better than most and probably better than Feliciano. Sure will be great to get Bellinger back as well, which seems like it will happen and will help the run blocking.
Bredeson
Gates
Glowinski
Neal
Thomas
Ezeudu
Gates
Bredson
Neal
Bench
Neal
Glowinski
Phillips
He's the best center on the team. Shuffling him around degrades the interior of the line. His strength is coordinating that unit as well as covering mistakes by the two guards beside him.