What about this hand this morning
Same stakes...
BB with KK
A few limpers around to button who makes it $25 he hasn't been at the table too long and has pretty much starting stack of $400
I know he's came from overseas for the Aussie millions but don't have any other info on him.

KK. I raise to $65 my stack is about $570.

A few folds round to button and he tank calls.

Pot $140

3 J 8 rainbow

I bet $75 and again he tanks for about a minute pushing his chips around and makes the call.

Pot $290

Turn 2s

I decide to merge cautiously and check. Again he tanks for a little bit a puts out $100. I call.

Pot $490
River 9d I check he puts the rest of his chips in think it was about $130
Thoughts on this?