I was just watching Mfiondo Kabengele's G-league highlights from last year. He's on the Celtics' summer league roster. What's the problem with this guy? He's been on five teams since being drafted in 2017.
https://www.youtube.com/watch?v=2yU8EvSzpU8
In general, I like the Celtics going with a developmental big for the back end of the roster. Same approach as with Hauser. This is a team without first round picks but needs to find a way to take shots at cheap, young players. Maybe it's as simple as picking between this guy, Trevion Williams, or both.
Too small and not athletic enough to overcome his lack of size. He is a solid athlete but he doesn't have that major athleticism you want from an undersized C.
From a skill stand-point, he has some skills but they are not good enough to overcome his lack of physical talent. For instance, when he played PF his skill-level was so much lower than most forwards that he became a large net negative & he had below average speed on defense. When he played C, his jump-shooting and perimeter skills were a small plus (but not lethal enough to be a large factor) but his lack of size on defense made him a large negative as both a defender & rebounder which made him a bad net negative overall.
Basically, he had no position. He was stuck in between a PF and C with neither the skill level nor the physical talent necessary to succeed at either one of them. Since then, he has failed to develop. Frankly, he is not an NBA player.
I was very interested in him when he got drafted. He felt like one of the steals of the draft. Even in LAC after a slow start, it felt he had some poor man's Serge Ibaka type qualities in terms of being an undersized mobile defensive big who can stretch the floor with his jump-shot.
But ultimately, he wasn't athletic enough on defense and particularly poor as a rebounder. And not skilled enough on offense to make up for it. He has some low level perimeter skills but he needed a lot more than that to overcome how weak he was as a defender & rebounder.