Turn x/r is underbluffed but for this price don't think I have another option but to call. River doesn't change much and his sizing looks quite weak. Don't imagine he is doing this with worse for value although there aren't a huge amount of flushes out there with the A and J on the board. I put the hand through equilab and we only need him to be overplaying a hand like AJ or bluffing a few Kdx hands for this to be call but not sure how often that actually happens.