They gave him away for roughly negative $4-$5M dollars depending on who replaced him. The fact Bradley barely got paid more on the open market than the Reds would have had to pay him implies he doesn't have some sort of excess value over what the Reds had to pay him. The Reds seemingly couldn't trade him for anything. And since he didn't have any excess value and a non-guaranteed contract, the Reds essentially just chose to not sign Archie Bradley as a FA for $5M and the Phillies chose to sign him for $6M.