15 30 hand

We have bit history with villain from this hand: I have bluffed him several times, and last time he called a $630 pot bet on river with 87 when the board KJ846, but he has as well given action to my winning bet pot hands. I have never showed a bluff to him, I once gave bit too much action with 2nd pair when he pot bet whole way to river and hit 6 outter there.
Generally speaking we both think that other is good and capable of doing big bluffs and calls.
The pot bets have not been exactly pot bets but somewhere from range of about 80% to 110%, so no read on that neither way.

Villain has $3300 and I cover.

I open raise from UTG(6 handed) to $120 with A [img]/images/graemlins/heart.gif[/img] K [img]/images/graemlins/spade.gif[/img] villains calls from button and other folds.

Flop:
A [img]/images/graemlins/diamond.gif[/img] 8 [img]/images/graemlins/heart.gif[/img] 7 [img]/images/graemlins/club.gif[/img] I bet $240 and and villain miniraises, I call.

Turn is 4 [img]/images/graemlins/club.gif[/img] check-check

River 6 [img]/images/graemlins/heart.gif[/img] I check again and villain now bets $1050 what is heros action and how was rest of the hand?