talked about him some in the Alternate Plan thread. Thought there were some interesting points in this story.

Johnson played quarterback at Kilgore College, but switched to tight end, which is where he began his Oklahoma career. He changed again to defensive end, then to offensive tackle before his junior season.
Over that span, he transitioned himself from a tall, lanky quarterback to an imposing, powerful offensive tackle. But even as he gained weight, Johnson kept his speed, which he demonstrated throughout Senior Bowl week, especially on one memorable play during the game.

Kiper slotted him going 16th to the St. Louis Rams, and Todd McShay has at No. 11, going to the San Diego Chargers.
“They were pretty wowed by all the positions that I've played,” Johnson said of NFL scouts.
“I want to show them I have the fundamentals and technique down to play tackle well. I'm not a raw prospect by any means.”

The more I learn about this guy the better he looks. If not re-signing Bushman or another UFA then LT skyrockets as a need. Some scouting comments from assorted sources without linking them all-

01/24/13 - 2013 Senior Bowl, OLine, Three up...2. Lane Johnson, Oklahoma (6-6 ¼, 302 pounds). Like Fisher, Johnson is NFL-ready after a solid three days at work. Occasionally he was pushed into the backfield but otherwise he was dominant against his teammates on the South team.

Lane Johnson is a NFL-ready player with excellent size who should hear his name called very early in the 2013 NFL Draft. He shows a nice explosion out of his stance and accelerates well. Oklahoma was not afraid to pull him out in open spaces. Great extension with his arms and looks to keep guys at arm's length consistently. Must learn to keep his feet moving and can be caught flat-footed by quick changes of direction. Still has some room to add more strength. A raw player who has more to learn at the position since he has only been an offensive lineman for two seasons with the Sooners.

It’s clear he’s picked up the position quickly, which is a big plus. His biggest bugaboo at this point is his ability to anchor against an effective bullrush. Once he fills out his frame it shouldn’t be a problem. Johnson was nagged by an ankle injury for a short time during his senior season but otherwise has a clean injury history. His upside is as high as that of Luke Joeckel and Eric Fisher; he’s just less pro-ready come day one. Johnson is going to be a first round pick and has value in top half of the first. He may have some hiccups early on, but Johnson is going to become a franchise left tackle.

Lane Johnson is one of the best offensive tackles available in the 2013 NFL Draft. He's awareness jumps out when watching him play. Athleticism and short area quickness won't be an issue for Johnson. He's going to come off the board at some point in the first round and have a steady career in the NFL.
Pro Comparison: Jordan Gross, Carolina Panthers
Both Johnson and Gross play the game with tremendous awareness and instinct. They also both lack a bit of the mean streak you like to see from an NFL offensive tackle. Johnson has the upside to become a Gross-type anchor on an NFL line.

His footwork and size, combined with his speed make him an ideal target to any teams needing either more pass or run protection. There has been some buzz with three teams being highly interested, and a report that a New York Giants scout said after watching Johnson, ” That’s my left tackle.”

The defense is a sieve that needs repair badly. This guy over Bushrod would free up over $6-8mil of cap that he will cost yearly though. That's money that could be spent towards defense. Then ya got yourself a shutdown blindside protector for Brees as he heads to the home stretch of his career at age 34. With the complaints many have about the defensive draft selections past, here you have one of the surest types of picks you can take.