who makes this turn call

[Vehn]

30/60 cp I raise Th9h in MP, button calls, he's pretty passive and straightforward and sometimes plays good preflop and sometimes bad, not sure here. BB 3bets, he's a decent straightforward tag.

Flop J 9 4 w/ 2 clubs BB bets I raise button coldcalls BB 3 bets we both call. Turn 8 offsuit, BB bets I call button raises, BB grumbles and folds, how often does he have to have a set or two pair here for me to make this call?