Background: This is a very deep-stacked free tournament with a slow blind structure. In general, pre-flop action is very loose - many players are limping pretty close to ATC and calling a single raise very wide. Villain is definitely one of the better players, but also a very loose-aggressive player who definitely has similar pre-flop tendencies. In a pot limp/folded around to him in middle or late position he will almost always raise with ATC. His post-flop play is far better than the average in this field. I have a rather bluffy image post-flop at this table - multiple folds to donks/reraises on the flop after I raise pre-flop and cbet.

Mocked-up HH (Blinds are 15/30):

MP: t2500 M = 55.56
CO: t5000 M = 111.11
BTN: t5000 M = 111.11
SB: t7500 M = 166.67
BB: t5000 M = 111.11
Hero (UTG): t4000 M = 88.89
UTG+1: t6000 M = 133.33

Pre Flop: (t45) Hero is UTG with K K
1 fold, Hero raises to t125, 1 fold, MP calls t125, 1 fold, BTN calls t110

Flop: (t405) A A 3 (4 players)
Hero bets t300, MP folds, BTN calls t300

Turn: (t1005) 7 (3 players)
Hero bets t700, BTN raises to t4575 all in, Hero: ???


Is there any way I can call this given the villain's image and his lack of aggression before the turn?

dump it. its one of those spots where it doesnt seem like hes ever bluffing here imo. especially if the other players at the table are as weak as you say, then you don't need to tangle with this guy.

fwiw, i don't like the bet flop/bet turn line. there isnt much you are going to get value from betting both streets. depending on history, i prolly ch/c flop, and evaluate the turn - most likely folding to a turn bet.