he's gonna get cut by the falcons. he's gonna be banished from football. He'll get his probation and likely beat it, or do a little time.
He's too valuable of an athlete to be ignored when it's all over though. The man can outrun 99% of NFL players.
I believe he'll play again. Might be 2 years from now. But some owner of some last place team will put him in as a Kordell Stewart type once he's "made amends" and done his PETA volunteer work and apologized 10,000 times.
Or, he'll just keep his millions and retire. But he's too good, and while dogfighting is horrible, beating the shit out of your girlfriend is far worse, and we watch guys every sunday who have done that.