After leaving Duke, Frank Jackson struggled a bit with injuries, missing the 2017/18 season before bouncing back in the following two seasons, both with the New Orleans Pelicans, which then had a high number of former Blue Devils with Jackson, Brandon Ingram, Jahlil Okafor, JJ Redick and Zion Williamson.
They opted to not to keep him though so he went to Detroit on a two-way contract.
The Pistons must have liked his shooting - he hit about 40 percent on threes and average just under 10 ppg - because they are bringing him back next year, again on a two-way, two year deal.