Personally I don't care what he does, as long as he doesn't get suspended and helps the team. I could care less what he does in his off time. You want a team full of choir boys?
With all due respect, this sounds like, "Personally, I don't care if my wife is cuddling with another man, as long as they don't have sex."
One action portends a great likelihood for the other action.
If Nkemdiche has a problem with drugs to the point that he's jumping out of fourth-floor windows, then it's highly likely he's got a huge problem and will likely he'll smoke again and get himself suspended.
Look what happened to Randy Gregory?
If you're going to take a player like Nkemdiche, you do it with the compensatory fourth round pick. Our first four picks need to be either a future quarterback and three potential starters or four potential starters. Either way all of the picks we select - outside the future quarterback - should contribute to the team in a significant way this season.
I don't think we should gamble on any players who are either question marks through attitude, drugs/alcohol or injury. This would rule out Jaylon Smith too. I wouldn't touch him except maybe with our compensatory fourth round pick.