Rose is a lock and could very well be a starter if he gets more votes then Rondo, which could happen. So that is one.
Noah could very well be a coach's choice to backup Dwight Howard. He will be fighting it out with Al Horford and Andrew Bogut, but if he continues to put up 16ppg, 15rpg, and 2+bpg, then he will make the team. That is 2.
Boozer might have a chance as well. I am sure that Amar'e Stoudemire will get the start even with subpar numbers simply because he plays in New York, but if Boozer can come out strong and be averaging close to 20 and 10 then he should make the team as well. There really is not a lot of reat power forwards in the east. Out west he had to contend with Dirk, Duncan, Gasol, and even Garnett when he was with the Timberwolves. Now the only other good power forwards are Amar'e and Bosh and Bosh is not having a great season thus far. Boozer could be a 3rd.
Luol Deng has looked pretty god after a slow start but his scoring will certainly drop a bit once Boozer is back and he will likely be averaging about 16 and 6 come the Allstar game so I simlpy do not se him making the team. If however he is still averaging around 20 with 6-7 rebounds and shooting a high percentage from three point land then I guess he would have a chance.
Here is how I see the percent chances:
1 Allstar 100%
2 Allstars 75%
3 Allstars 25%
4 Allstars 5%