One of my favorite college offensive linemen, will likely move inside in the NFL but could hold up at tackle in case of injuries. Right now I look at him like a 2nd rounder. If the 49ers think that they won't be able to re-sign Iupati and Looney doesn't appear to be the answer, Martin would be a great guy to bring in with the goal of developing him as a starter at LG. He could provide instant depth on the OL at guard and tackle in case of injury too. He plays with a lot of intensity, is very athletic for his size, aggressive, shows good balance, equally talented as a run blocker and a pass blocker.