I don't see Bates taking JRM's spot, but I do see him playing a decent amount this year. I think they will slide him in at LB some on passing downs maybe whenever they let Maggitt line up at DE to get a decent rush on passing downs. Bates also has good speed apparently, so I think that would be the best way to get him involved early.
But off the top of my head a couple of the most likely to get replaced, and most interesting are Brendan Downs, and McNeil. It might not be right away, buy I expect Helm will end up being the starter by years end after a little time in the weight room and learning the system. I also think TKjr could end up starting from day one if he is as good as advertised, and that is mostly because of the weakness we have in the secondary. He could either take Mcneil's spot at safety and McNeil could get moved to Nickel and Coleman the bench. Or TKjr could just end up playing nickel himself and taking Coleman's spot directly. If he doesn't end up playing much in the secondary this year they should still try and find a way to get him some touches at PR or KR. Makes me nervous most of the time having a freshman on PR but I think KR would be ok. But maybe give him a couple looks at PR against some of the weaker teams on our schedule or just any game where we have a decent lead.
Hurd is an obvious choice but he will get plenty of playing time regardless just because of the position he plays, well that and he is also very talented. So it doesn't really matter who starts at RB as both Lane and Hurd will see plenty of carries, and rest assured we will need both of them to make it through the SEC.
Malone also looks like he will def start, and is probably the most obvious choice. Pearson also, will at least play a lot if he doesn't end up taking Pig's spot.
And then we have Medley. I've never seen him kick but if he is as good as advertised he could easily start from day 1 given our struggles at kicker the past few years (outside of Palardy's last year).
One more thing. I think Justin King will end up being a good player for us at some point and will break out by the end of the year. He's too good of an athlete not to. Looked good his freshman year and have been hoping to see more of him after not much playing time last year. I like our athletic ability at LB a lot more this year than I have in a while. Should help us not get burned on the outside as much hopefully