I would try to maybe thin the 7 enough block the pocket and leave him with a hittable ball on the 13. Then he'll hit that which will pop out the 5 for sure and either give you a shot on the newly relocated 7 ball OR ideally the 5. Also, if you needed to.. you could at this point do a one rail combo into the 7 with a decent idea of positioning for the 5 (if he gets stubborn about safing the 13)
I'd prefer he have a definite hit on the 13 that can't really be sunk than for him to just give it back in hand. Otherwise we'd be talking about this same question but it'd be "What do I do w ball in hand here?"