REALLY good career move for Coleman. Unfortunately, there's a better than 50% chance GT will be looking for a new HC after next season, and this staff will be scrambling to look for new jobs when CGC is let go. At minimum, GT has to make a bowl game, and depending on how much "progress" is being made, making a low level bowl game might not be enough for CGC to keep his job.
Mel Tucker just signed a monster coaching extension that rivals the upper tier of coaches salaries in college football. Anyone that joins Tucker's staff will have job security as long as Mel Tucker deems the coach productive to the program. It's why I was shocked Tavares Tillman left Mich State to come here.
Coleman, much like Tashard Choice, is making a "business decision". IMO, they are making smart business decisions to join coaching staffs and programs that are on much better footing than GT. I can't fault Coleman for doing what's best for his career and family.