The Memphis Grizzlies are not openly shopping around OJ Mayo, but their prior interest in trading him, and the fact that he's playing out the last year of his deal may have the Grizzlies listening to teams interested.
Mayo is averaging 11.9 points per game, filling his role as the sixth man in the Memphis line-up. Mayo has shown he can score off the bench, and teams looking for shooting off the bench would be interested in Mayo.
In his first two seasons in the NBA Mayo started 163 of the 164 games he played for Memphis. Over those years Mayo averaged 18 points per game. Showing that he's a comparable starter, and scorer in the NBA.
Teams could use Mayo to start or off the bench but either way, these four teams would be much better if they made a move for Mayo.