We don't know what his offer might be that someone cannot refuse, but it most probably will be an offer to either buy an account or asking someone to bet for him and share the profits and both of these aren't good for the other person.
These are offers that shouldn't be taken in consideration by anyone, doesn't matter the price he pays for it, because the most valuable good or asset in life is our name, that in this case could be translated as our ID. Someone selling an account on any bookmakers to OP is going to face serious issues later, once he is caught doing shady things once again. We don't know exactly how further the consequences can reach for the seller, but for precaution just stay away.