I think the concerns about his "glass body" are overblown.
IMO, if the injuries have changed the way you play, i.e. Blake Griffin, then it sure is a concern. From what I've seen, he's still as spry as he was in his first year in the NBA. Some players are just unlucky for a few years, and then go on to be injury-free for the rest of their career.
I think his biggest issue is his decision-making. If it was anything else, I'd say he's a lost cause and has no room to improve. But the guy did average 17 points at one point, and not any scrub can do that. If Trey Lyles had the offense go through him, he still wouldn't get close. There's talent here, and it's a gamble that could pay off.
What's interesting is in the last few games for the Bulls, I've read that he's been slotted at SF.
Raptors could be a landing spot for Lauri.
After the Raptors’ 122-113 loss to the Bulls on April 8, Nurse was very complimentary of Markkanen. He referred to Markkanen as “a really good player.” He said Markkanen “was unbelievable tonight, and he played 18 minutes. He was unbelievable. Every time he touched the ball, something good happened, and every time we made a mistake, he made us pay.”