Both Jimmy Butler and Derrick Rose are saying all the right things publicly.
Transition can be difficult, especially when it means handing off leadership from one highly visible person to another. Such transition pops up all the time in the NBA, as players get hurt or age and younger guys step in to fill the void. It's a process in which the Chicago Bulls are squarely situated currently, as Derrick Rose's injury history and the growth of Jimmy Butler has turned the Bulls from Rose's team to one guided by Butler.
But that doesn't mean there has to be tension.