I've seen Motujanas and yes, he is a horrible defender - bad man defender, bad help defender, and just average rebounder. I don't see him becoming more than an average defender, if he works really hard at it.
His body needs a lot of work, the slightest contact throws him off and anyone strong enough to bench press a candy bar can take him to the post.
But he's one of the most skilled 7-footer I've seen. I'm talking about Vlade Divac/Toni Kukoc level of skill. Motujanas' is a true ambidextrous, the first thing that struck me about him is that his left and right hand are equally good. I've seen him grabbed a rebound, pushed the ball up the floor and with his right hand (weak hand) wiped a behind the back pass to a teammate. He can go right or left, finish with either hand, or shoot jump hook with either hand equally well.
The second thing that struck me is his ability to read the defense and make plays. When Spencer Hawes was a rookie and he got the ball, I have a feeling he doesn't know what to do half the time (and you may argue that he still doesn't). With Motujanas , this almost never happens. He's one of those guys that you expect something to happen every time he touches the ball. Now, he is prone to TO and he can be wild at times, but even when he failed to pull it off, you can see what he was getting at. You can see that the defense was reacting to him rather than the other way around.
A typical Motujanas moment has him with the ball at the elbow or just inside the 3-pt line. He is not quick but has good handle and he can go left or right so the defender has to respect that. If the defender backs off he can hit the 20 foot jumper. If the defender closes in, he gets by him into the lane where he is at his best - he can find an open teammate under the basket, shoot a floater, or kicks it out to the open shooter.
For a guy who gets pushed around, Motujanas is not afraid of posting inside. He is very long and his hook shot is near unblockable, but the slightest contact throws him off so he has only moderate success in the post, but the potential is there.
Now I don't want to come off sounding like I'm on his bandwagon because I'm not. Motujanas is still very raw and he doesn't fit into where the Kings are heading. He is a great-offense no-defense center that is atypical of the type that I want on the team. However, don't discount Motujanas just because he is a soft Euro. This guy has all-star potential, with emphasis on "potential." The only thing he has to work on really, is his body. He has most everything else: namely height and skill. If he can pack on an extra 50 pounds of muscle (and I have no idea how or if it's even possible) then I can see him being very good.
While Alabi or Udoh may be better fit, Motujanas may be the BPA.
If the Kings somehow fall to #8-10 range in the draft, I'd seriously consider Motujanas because of the upside. But I don't think he is Petrie's type at this point.
.