We don't gain anything by letting him talk to other teams, either. We're not getting a pick for him.
Look, he's a very, very smart kid. Does anyone honestly think he's just winging it, and will have this sudden revelation on Aug 15? This guy has known where he wants to play all along. If it was here, he'd be signed. This whole act of "we are committed to seeing this process through and waiting until the 15th" is called lip service.