Circle April 28 on your calendar. That's the NFL draft, and unless something strange happens, David Carr will be traded around that time. Texans GM Rick Smith's toughest job will be creating a market for Carr. I'm guessing he's going to have to settle for a fifth-round draft pick, but it only takes one motivated buyer to drive the price up. As for who is going to replace Carr, I think it'll be Jake Plummer. Problem is, there is a market for him. The Texans probably are going to end up paying more than they'd like to pay.