Free-agent series: Offensive line

We conclude the five-part series with the start of free agency. It started at 11:01 Thursday night, but you get the idea. The last part of our series is the offensive line.

The unrestricted free agent: Guard Montrae Holland.

Bring him back? Nope. The Cowboys traded for Holland in August 2008 and he played six games. The Cowboys brought him back for 2009, and he was inactive for all 18 games.

What happened with the restricted free agents? Guard Cory Procter was given a second-round tender worth $1.809 million, tackle Pat McQuistan was given an original tender (seventh round compensation) worth $1.176 million and center/guard Duke Preston was given an original tender (fourth round compensation).

Which restricted free agents have a future?: The Cowboys like Procter, since he's the backup center, so there's a good chance he'll be on the active roster in 2010. McQuistan and Preston are unknowns because of the uncertainty of what the Cowboys might do in the draft.

Who is out there?: It seems Jerry Jones wants competition at the offensive line positions. He saw what Doug Free did last season by taking over for an injured Marc Colombo and was encouraged by the fact he could play at left tackle in 2010.

"In the offensive line, we've got to have a plan on some competition there," Jones said. "That will be a focal point."

There are some pretty good offensive linemen that are unrestricted such as G Bobbie Williams and C Kevin Mawae but it seems Dallas wants to build in the draft when it comes to this unit.