First, this is going to get merged, just like the other threads that got started by folks too lazy to look a little further down.
Second, your premise is pretty faulty, in that the wad of cash the guys are holding has one $100 bill on top and a bunch of twenties behind it. So, at most, it's around 1,000 bucks. And I may be overshooting it since I don't feel like trying to count the number of bills in the picture. So if Bama is buying top ranked defensive ends for $1,000 in cash, then that's on everyone else for being stingy.
Third, the other two guys aren't football players. No one seems to be completely sure who they are, but one would assume they are a couple of Liner's friends.
To your question, will the NCAA investigate a player posing with $1,000 bucks in cash? Money that he could have made working a few weeks of part time for minimum wage? No. No they won't.