Kelly will have his pick of jobs next year (and maybe still even this year). He will be the first call for any college looking for a new head coach. And despite his challenges in Philly, there will still be NFL teams interested in him. If he wants to win big in college or return to the NFL, BC clearly won't be a factor. But who knows what will motivate him?
Kelly has always marched to the beat of his own drum. Instead of going to a football factory or dealing with pro athletes he can't push around, the idea of building up BC might appeal to him. It gets him back to New England. It gets him in an environment he enjoys. He loves BC and is very familiar with the campus and program. He used to work the BC camps while at UNH and he had multiple BC guys on his staff. Even if Addazio struggles, in 2016 the job will be better than it was. The roster and athleticism will be good. The indoor practice facility will have been announced (and hopefully have a ground breaking). If Kelly really wants to coaching in the right place for him and close to home, BC might fit the bill.
I won't root against Addazio next year nor do I think Kelly is probable, but so much of all of this is timing. Maybe, just maybe, next year will finally be the right time for Kelly to come to BC.
Of the BC guys now out of a job in Philly, I don't seen any returning now. After all that happened this year with the Offense, I don't think Addazio is willing to move back to Ryan Day. There's too much sensitivity to fault and reasons for past success. Bill McGovern would be a good linebacker coach, but does he want to come back to that after he's been Coordinator here? Dawson left BC in part due to his frustrations with recruiting. Recruiting remains a huge issue. I wish them all the best, but don't see any coming to BC right now.