Considering the type of player he is, i think this and next season are his last being the beast he is. He does not seem to be the type of strikers who can perform at 32+.
I don't know about 36, but he can play well in his 30s for us, because his game is not based primarily on speed. If we find ways to rest him properly (hoping Alcacer will turn out fine), I don't see way he can't play 3-4 more seasons with us.