Depending on where you look, Rip's contract beyond this year is either a team option or only worth $1 million guaranteed. So it's possible that he could be moved to a team looking to shed longer-term salary commitments.
Bulls are right up against the taxpayer threshold, though, so any move would have to bring them back less salary for this year. Could make things a little tricky for them. And, if the Bulls are making a playoff run when Rose returns, they may prefer to keep Rip's shooting (assuming he's healthy).