Dallas Mavericks coach Rick Carlisle may have opened the door for Caron Butler to return in time for the Western Conference finals, just three days after team president Donnie Nelson called that idea "next to impossible." "He's now at a point where he's dunking the ball and he's making more and more progress," Carlisle said Tuesday. "When he's back, he's going to be back 100 percent. Timetable-wise, I don't know exactly when that's going to be. I'll tell you what, it's [Butler's aggressive rehab] something that's energized our team, really since he took his knee cap and shoved it four inches back into place on Jan. 1 in Milwaukee." Read more: http://sports.espn.go.com/dallas/nba/news/story?id=6521524