According to ESPN.com's Ian Begley, "opposing teams have come away with the impression that Johnson is available for the right return."
Johnson, 21, was selected eighth overall by the Pistons in the 2015 draft.
Since then, the University of Arizona product has failed to find his footing as a scorer and has developed into an offensive liability.
Through 32 appearances this season, the 6'7", 245-pounder is averaging 7.3 points per game on 34.8 percent shooting from the field and 29.1 percent shooting from three-point range.
While it's unclear what kind of return the Pistons are looking for, they have reportedly been in the market for upgrades on the wing.
Begley added that while the Pistons "have been one of the most aggressive teams in the trade market," they "don't appear to be interested" in trading 2017 first-round pick Luke Kennard.