GG fits Snyder play better than Coffman. Coffman has been given the credit of "potential starter" by most as he has more experience that our two RS Freshmen. But with Snyder bringing in GG and CH (

) who both fit Snyder's style better than the previous three, it is easy to assume that Snyder is going with GG, with the intent to start CH next year.
The only reason he would start Coffman is if he tries to develop him into the player that fits his program over a course of more that one year... which is not happening