First, all the lawyers know that nothing is wrong with the way the process is playing out. If you were a lawyer you would know that what is going on is completely proper, heck I can't even think of a straight faced argument to make that supports your position.
There is absolutely nothing preventing him from getting on with his life. Butch Jones is the only one who is doing anything to keep him from playing football, and Butch can change that any time he wants.
No one may never hear another word about this situation. KPD and the DA do not have any obligation to any citizen to announce when they are not bringing charges, in fact the assumption is that if they don't announce that they are bringing charges then they aren't.
Of course there is this little thing hanging over the school called Title IX investigation.
BTW both attending UT and playing football are privileges, not rights, and to be able to exercise those privileges you have to follow the rules set down by (in this case) both the school and the football program.