Kelly Dwyer is also understandably geeked about Rose's return, but tempers the timeline quite a bit:

It will take a while for Rose to return to NBA speed. It will take a while for his teammates – some new, and some 19 months removed from playing with him – to adjust. The Bulls, in a deeper Eastern Conference than the one Rose left in April of 2012, could struggle to adapt.

Maybe it'll get worked out all in preseason, but it also may not until midseason. Odds are it'll eventually get there, which despite any future consternation still means this Bulls year will be a better fan experience than the last one.