I think he realizes he has some of the best coaches to develop him and the competition with Tua has pushed him to develop more even if he is not the starter. Based on him being used in early game situations with the first string Bama is still looking to use him in the offense. His statistics are in line with his performance the first 3 weeks of last season with less playing time (67% completion, 4 td, 8.8 yds per attempt) expect for tds per attempt which he had cut almost in half from 13.25 to 7 passes per passing td. I would be surprised if he quits the team to redshirt this year. Look for him to continue to develop as a passer this season and transfer or enter the draft next year.