btw, given my experience with him i'd think you should call turn and and he probably won't bluff the river here. His only moves are basically a double barrel and a squeeze.
But that's irrelevant if were just thinking in your perspective. But thinking about it, he screwed himself a bit with his betsizing leaving him only 1k to shove into a 1400 pot. Some people just don't have the balls to bluff that river much, do you think he does (with my reads, no, but with yours maybe different?)?