Mcshay just compared Clowny to Bruce Smith. Also said Houston would want this years first second and fourth round with next years first. So I decided to look back at the 1985 draft to see what the team drafting at 9 would have given up to get Bruce Smith. In 1985 the Eagles had the #9 pick and with that pick drafted OT Kevin Allen, with their second they drafted Randell Cunningham, and G Greg Naron in the fourth, with their 1986 first round pick going to RB Keith Byars.
So if I am looking at the history and what Clowny could bring, I would say make that trade.