The rumors are heating up. Sources close to Jarrett Jack are saying he expects to be traded before the deadline. No word yet on what kind of deal might be in the works, but there's also rumors that Portland could be looking to move Taurean Green as well.
Speculation time: Odds are, if Portland is looking to clear up the log jam at Point Guard, they're most likely hoping to fill a need. Right now those include perimeter defense, and interior rebounding. Odds are you can't fill both at the same time, so who do you think the Blazers could be targeting?
I know Jack was included in the earlier rumors regarding Danny Granger, but you'd have to believe the price would be a LOT steeper than that in order to land him.
We can speculate, of course, about WHO Portland might be trying to get, but my assumption is that this is more about dumping Jack (an aborted experiment, perhaps) and clearing out space for Sergio to develop, and Roy to continue taking more duties at the point.