My vote was for Shaq.
Harrison has yet to find his home in the NBA after being undrafted in the 2017 draft. He was picked up by the Phoenix Suns and later released in 2018, leading to the Bulls acquiring him.
Averaging 11.3 minutes per game last season, Harrison did impress in a supporting fashion. He led the NBA in steals per 36 minutes (2.1) and showed heart and hustle when on the floor.
He also drastically improved his 3-pointer percentage from 27.1% to 38.1% and was trending in the right direction before the 2020 season was suspended.