Would need to be a three team deal with a SF/SG going to Houston.
How 'bout Ray Allen for Scola? If Ray just signs in Miami or LA, we're not going to get anything in return, and Scola would be a decent pickup. Although, that's a lot of money Scola is owned for the next two seasons.
EDIT: Obviously, Ray would have to be interested in Houston, which has not been mentioned as one of his preferred destinations. If he worked with the C's for a S&T, though, hw could get paid a fair amount more than Miami could give him.