I think the drugs and the injuries would be a consideration to a degree for Bill.
However I think the bigger consideration may be the guy's competitive nature.
Does this guy have the fire that would make Bill overlook some of the other problems.
If memory serves some in that WR corp, and other members of the team, were questioned for their committment and what they would do to get better.
One of the reasons giving for hiring their current coach was because the FO (yes I know that includes mongo) thought the team needed a hard head coach that would set his foot down and be a disciplinarian because too many on the team lacked discipline.
I may be getting these guys mixed up but I was thinking that this WR was also reported to have missed team meetings and had other troubles. I know Mike Williams missed meetings but I think this guy did as well.
If that desire or committment is not there doubt Bill would want anything to do with him.
Just something to consider.