Pretty inappropriate comparison, don't you think? I don't think it was that clear to him though he should have sought professional counseling help. I mean almost every football club is sponsored by a betting company, so in principle there is the same conflict of interest as with an individual player.
He can own whatever betting company he likes as long as he is not a player. However, he is still a player, is he not?
However I agree that bet companies sponsoring the clubs isn't the most sensible thing neither. If there is no problem with taking their money for the clubs, why would it be a problem for the player? If a player can rig a game, so can a club.