You can bet your butt the big boy boosters at A&M are demanding that Manziel play regardless. I'll say this again - Look at A&M's schedule. The only two tough games are Alabama and LSU. Aggy gets Bama at home and they must play LSU on the road. Manziel is an elusive little shit that only got better as the season progressed last year. Now personally I think Alabama whips the hell out of them when they play but aggy could very well beat LSU.
Point is with a little luck aggy has a shot to win more games than not because of the generous schedule and Manziel is a guy that could win those big games for them.