I started to say that OOP, you must push this...

but I can see a case for calling. If he has a lower set and you smooth-call/check, he will push the turn (if its a non-club). If you re-raise all-in on flop and he has 22, he might lay-down -- (but I doubt most players would).

given his betting pattern, I just don't think he has 2 clubs, unless its 5[img]/images/graemlins/club.gif[/img] 4[img]/images/graemlins/club.gif[/img]... 2-pair seems unlikely given the board cards...

so how often will he lay-down a set here after already putting that much money in? Net net, I see an argument for calling if he has an overpair or a smaller set and will push the turn... but too many cards might kill that action...

net net, he has 77-99, a small set or 54... most of the time he won't get away from his set if you push here so push in case a club comes on turn and just suckout vs 54...