Dallas Cowboys

Cowboys welcome back Sean Lee

Sean Lee works during an individual OTA drill at Valley Ranch on Wednesday.
Sean Lee works during an individual OTA drill at Valley Ranch on Wednesday. Star-Telegram

The Cowboys like the additions to their defense. They drafted Byron Jones, Randy Gregory and Damien Wilson, among others, signed Greg Hardy, Jasper Brinkley, Andrew Gachkar and Keith Rivers in free agency and claimed Corey White off waivers.

But a veteran already on the roster could rank as the biggest addition from last season.

Welcome back, Sean Lee.

“Oh, it’s fun,” defensive coordinator Rod Marinelli said. “He’s a ball of energy and excitement and represents who we are.”

Lee didn’t speak to reporters after the team’s organized team activity Wednesday, the one-year anniversary of his season-ending injury. He tore his left anterior cruciate ligament in the Cowboys’ first day of organized team activities May 27, 2014.

Lee is participating in individual drills as he continues his rehab.

“Sean has looked really good so far,” linebackers coach Matt Eberflus said. “He’s been doing mostly individual, and we’re going to taper him into some more team stuff as we get going, but he’s done really well so far at that [weakside] position.”

The Cowboys are moving Lee from middle linebacker to the weakside, the most important linebacking position in the Tampa 2. It’s the position Hall of Famer Derrick Brooks played for the Tampa Bay Buccaneers and Lance Briggs played for the Chicago Bears.

“That position is built on instincts,” Marinelli said. “You’ve got to have movement and speed and all those things. But it’s awareness, and I think he’s got really good instincts to play. He’s covered up [by the under tackle], so there’s somebody always in front of him. I think he can really use his speed.”

Charean Williams, 817-390-7760

Twitter: @NFLCharean