Okay, I give up, why would the Clippers make this trade?
Let me start by saying my son went to Temple so I watched Collins a fair amount in college. As of late, he seems to be finding his NBA game. In January he's playing 30-40 minutes per game. He's getting double figures in scoring and 7-8 assists per game. He's also a pretty good defender and gets a fair amount of rebounds for a guard.
Skinner has also been playing more as of late and his rebound and scoring numbers are pretty desent. Look at the last month if you don't believe me.
While I'm not saying either are all-stars, why would they trade them for a big who can't get off the bench, for a team that's dying for height, and a D- league player? If for some reason they wanted to package and move them, I positive they could get more.