Rival teams are monitoring the availability of Pat Connaughton, according to Michael Scotto of HoopsHype.
The Bucks are currently $6.5 million over the second apron, with Connaughton making $9.42 million this season.
Connaughton also has a player option for the same amount next season.
The Pistons, who have $14 million in cap space, are seen as a logical destination for Connaughton.