I expect Morris to be decent as a starting PF for us and the 4th option (and maybe 5th) on Offense. No, he is not a prototypical PF, no, he won't stretch the floor, but he will get buckets, play decent defense, and I believe rebound more than sufficiently. In short, he will give us what we need from our 4th or 5th best player.
I think you are trying to solve a problem that doesn't exist. Now if you can show me a way to trade Morris and bring in someone who would be better at PF, great, show me, but we don't need two more players that maybe marginally upgrade the end of our bench.