To be fair, Yabu has never really been given a decent run.
His most active season saw him getting 7.1 mpg. His first year saw 38 players in the 2016 draft getting more minutes. His second year saw 41 players from that draft getting more minutes. Last year saw 35 more players from that draft get more minutes.
He is actually a very nice trade filler/low-risk prospect if he does well at his new team, they can extend him for a bargain rate if they believe in him.
Semi is what he is now.