Here is a list, which excludes obvious superstars (including Kyrie Irving) who wouldn't be a remote possibility. Some of these are pretty far-fetched, as it is.
1. Rubio (pre-injury, for sure, although I might want to wait a bit to see he's recovered)
Yeah, Rubio can't shoot. I don't care. He makes everyone better, and he also forces the coach to play a more attractive style to make best use of him.
2. Rondo.
He's going to wear down earlier than most, I'm sure, because of his breakneck style. But Boston would never trade him. However, he would make the Blazers must-watch-TV.
3. Stephen Curry.
Lillard is a good shooter. Curry is a GREAT shooter. Curry is also a better passer. Both are terrible defenders. Lillard will probably end up being a "poor man's Curry."
4. MKG
I don't care that he's going to be beaten handily by Lillard in the ROY voting - he's only 19 and he's a truly great all-round player.
5. Jrue Holliday
Lillard might also be known as "A smaller Holliday with worse defense."
6. James Harden
He's probably in the "obvious superstar" category at this point.
7. Anthony Davis
Of course NO wouldn't do this.
8. Marc Gasol
Best young center.
Now I look at this list, though, I can't imagine any of the other teams agreeing to the trade.