he is a lag, just re-raise him with your good hand's preflop. Reraise him preflop with hand like AQ and AJ and other things you normally dont raise with. Re-raise him on your good draws or pairs, most of your re-raise he will fold to. Don't let him draw cheap, make him pay. Be careful of low coordinated boards, 5
9
2
is a safe board except against a lag, that is right in their neiborhood.
also dont always assume he has a hand when he C-bets.