I'm really not saying this is the case, but I've been in the football world a long time to know when it can be a problem. Once again I don't know Foster and I'm not saying if this was the case here... but what I learned about Foster is that he tends to make irrational decisions based on certain moods.
And what I've learn over the years with sports players :
Party + alcohol + money = drugs.
Drugs can lead to diluated samples.
I'm not saying this is Foster case, not at all. But he fits the mold and that scares me. Thats why teams wanted to interview him and I heard he had some bad interviews and bad temper. Impulsive people will be impulsive in anything in life. Training, drinking, gambling, working. When you have a pattern of a player not making the right decision because of impulsive behavior, it HAS to raise a red flag. Thats what I brought the tattoo thing. Its useless, but it showed once again an impulsive behavior.
Once again he also have some problem with his rotator in his shoulder and might require another surgery. (Just like Shaw Lawson last season). We all know how it went down for Lawson right ? They said pretty much the same thing at the combine.
So when you add the behavior, the health concerns, the impulsive decisions with the diluated sample... thats a lot of red flags. I've heard he could fall as far as 40-50th pick. It would SURPRISE me a lot but last year I was kinda surprise on Myles Jack fall as well. Teams know more than we do.