Andy Heck, current KC Chiefs OL coach. Not sure he'd make the move back to SBN without something along the lines of an OC role, but he's certainly got the pedigree.
Justin Frye, Boston College OL coach. They have had good offensive lines under him. Coached with Addazio at Temple and under Urban as a GA at UF. Pretty young guy. Played at IU and is from Indiana.
Jeff Quinn, ND Offensive Analyst. He coached o-lines at Cincinnati under Kelly, then was head coach at UB, which fired him. Pro: short walk to the job interview.
Heck's got a good reputation...why would he take the risk