Devoto isn't a 10 imo. And with Ford and Priestland, he won't be used there much any way.
Even if Burgess moves to the backrow, Devoto has to contend with Eastmond and Joseph in the centres. I've read Bath fans calling Joseph Bath's player of the season so far, and Eastmond is too important to be removed. They could rotate with Devoto, but Devoto could start at a lot of the Premiership clubs.
At 15, there's Watson, Henson and Agulla. Henson and Agulla may move on and Watson may develop more as a winger. I think his best shot at making Bath is at 15. If he isn't given that platform or if he wants to play 12/13, he should move to another club.