[Poldi]

I like the turn bet. I think you take this down a significant amount there. If one calls and you did not improve on the river, there is no reason to bet.
He might have had a straight draw which he will fold.
His other hands are pairs, he called the turn with it although the board paired. He is not folding this river if he has you beat.
Thinking about a worse A? Some of the time he will show you one but it surely wont be often enough to make a bet profitable.