I don't know how the most of the NHL teams will take his illegal substance use, but I could definitely see at least some teams not choosing him because of what happened. If for not any other reason, at least for the sake of being afraid of bad image and pr reasons. I myself would definitely not pick this kind of player at all, for ethical reasons. I wouldn't want on my team people whom have at least recent proven history of illegal actions.
What exactly wrong did Rubtsov do? Took some legal medications from team doctors which were part of training process for several decades? I hate when people discuss things they don't know anything about.