This is a 16,5E rebuytour. 500 runners. 

60 gets paid.

There is around 75 players left. Im in BB with 45o and 40BBs. The Sb also has 40BB and is minraising after everyone else folds. Is this just a fold? Can i call and see the flop? 
I have played 1 pot with the villian before. He was in cutoff with 17BB and 3x it with KJs. I 3bet AJs on the button to 7BB. He calls.

788ss (his flushdraw) He jams. I call because he can have some like Ax, where X is allmost anything (but not AQ AK) because i think he puts in it pre with those hands.

Also hands like 910 J10 45s 67s. I think he puts it in pre with most pairs. So its a small part of his range that is PP.

So he opens 17BB stack with KJs and calls a 3bet.  (So not a great player)

Into the hand. I call with 45 and the flop come 1036ss. He cbets halfpot and i call. Turn is a 3.

He checks to me. Im guessing he just cbet the flop to cbet and now i giving up most of the time. Maybe he has some flushdraw or some Ax. So i bet halfpot and he calls.

The river brings the 9. No flush got there. I have a potbet left in my stack. And he has about the same. 

So what do i do here?