Probably another close fight. Zhang doesn't have the work rate to make Hrgovic gas, Hrgovic doesn't hit hard enough to stop Zhang but Zhang can hurt Hrgovic. Comes down to what you prefer, Hrgovic's volume vs Zhang's harder shots.
Zhang is at a point where he will be worse every fight. That's just how age and time works. He is not going to get faster, he is not going to get more stamina. He has to be careful with his match making. Hrgovic has time on the clock to make some adjustments in his game. If they fought again I suspect Hrgovic would win by decision. (For the record, I thought Zhang deserved the win in the first fight)
Hrgovic has no power but still has chin, coming from the defeat Zhang is now officialy old, has KO power, no gas tank, coming from victory 50/50
Hrgovic without power should work hard to win, especially after the defeat he is no longer the same, the only bright spot is his chin, but that too will come to an end, Zhang by KO...