He's been wickedly disappointing, but his last 5 games he's averaged 7.2 points, 3.4 rebounds, 1.2 assists with 59% shooting (and 77% shooting from the line) in 15mpg... That's per-36 of 17 points, 8 rebounds, 3 assists.... which is not too far off from his career averages (He's just a season removed from averaging 18/9/2 with 52%/78% shooting). That suggests to me there's still some game there and if he gets the minutes, he'll eventually show it.
It's going to be interesting, because I still get the feeling that we could sell high on Sully, which would mean minutes for Lee... but I could also see Lee's contract included in a trade. Gonna be a fun season.