Because the Blazers traded Blake and were apparantly fielding offers for Miller also, you would have to assume that Patty is in their long term plans, especially when you consider the playoff minutes he received (all be it in junk time of blowout games).
But as we all know the NBA is anything but predictable and he may still get moved on to free up a roster spot if they decide they can get someone who is a better fit. Whether he stays with the Blazers or moves to another team, it would be nice to see him get some more minutes next season because he is far too good to be just sitting on a bench gathering dust.
His games in the D-League this season showed he was a class above the players in that league and I think he could give an NBA team (including Portland) a great scoring boost off the bench if given the opportunity.
In the few times he made it on the floor this year and from the limited D-League footage I've seen, it seems that he has significantly improved his drive and kick game. He used to drive wildly at times, and was prone to chucking up poor shots but he now seems to be able to hit the open guys in the corner. If he continues to improve his playmaking ability I can't see how an NBA team wont want to give the guy quality minutes. He can shoot the lights out at times, he's lightening quick, a great ball handler and committed defender. If you can add great passer to that list, what else do you want?