Patriots guard Donald Thomas on Cowboys' radar?

NFL Insiders Gary Horton and Field Yates took a look a the Dallas Cowboys in their pre-free agency series.

The duo addresses the Cowboys' needs in free agency and discuss the overall team philosophies in this ESPN Insider column.

Backup guard Donald Thomas of the New England Patriots is mentioned as potential free agent target for the Cowboys.

Thomas, a 27-year-old four-year veteran, is an effective run-blocker who also would improve the Cowboys' protection of Romo. He's a smart, developing interior linemen who also offers value as an emergency center.

Of course, the Cowboys spent a combined $30 million on Nate Livings and Mackenzy Bernadeau last offseason. Livings had a good season until health issues derailed him late in the year. Bernadeau struggled for the most part and at one point during the season shared first-team reps with Derrick Dockery in practice. Bernadeau didn't lose his starting gig, but there was a possibility he could if he didn't improve his play.

The Cowboys need to improve the offensive line, and outside of Tyron Smith's play at left tackle and Livings, everyone is expendable. Bernadeau started at center for one game due to injuries and he's showed position flexibility. Signing Thomas, a right guard, and moving Bernadeau to center, could be a possibility.