I always thought he could become a very good player if he could add 30lb or so without losing mobility. I haven't seen him since he was in Dallas, so I am not sure if he's improved, but he had some glaring weaknesses in his game:
1. He was just too skinny. I know he was listed at 220+, but he looked like a 200-pounder to me. He was young, and big men take a while to fill out their bodies, so if he is 250lb now, I'd give him a chance.
2. He was a walking foul just looking for a referee to blow the whistle. Again, not unusual for a young, skinny 7-footer.
3. No offensive game. I remember him making a couple of really nice hook shots, so if he's worked on those in the last couple of years, and that's falling consistently, it might be enough to make him somewhat useful on offense.
Again, I haven't seen him in over two years, so I have no idea how much has changed.
As far as Portland goes, I don't know what to think. I am not sure what their plan is. Trading their lottery pick for someone like Gortat makes no sense, as Gortat is not going to make them a contender. Oladipo would make a lot of sense for them, but trading from 10 to 3, 4, or 5 is not easy.
I'd give them Gortat and #30 for #10, and their 2nd round picks (their own, and Wolves' pick), but I doubt they'd go for it.