Sean Lee believes the Dallas Cowboys' defense will be improved in 2014 by continuing the 4-3 defense.

The Cowboys shifted from the 3-4 to 4-3 last season.

"I think it'll be a similar base," Lee said, per ESPN.com. "Both coaches (Marinelli and Kiffin) are fantastic coaches. I think the issue is the players finding a way to play better within the scheme, being more consistent, being perfect with our technique and playing with consistency. Those are things we didn't do at all last year."

Lee believes the struggles were due to the players and no the coaches.

"I think that the 4-3, 3-4, there are a lot of similarities really," Lee said. "Obviously we didn't make the transition well, but that was on us working more, becoming better, learning quicker and executing it better. I think that's on the players."