Cowboys agree to deal with Duke Preston

The Cowboys have agreed to a one-year deal with center Duke Preston on Wednesday. Preston, 6-5, 320 pounds, was cut by Green Bay on Tuesday after signing with the Packers in March. He started 11 of 15 games for Buffalo in 2008. He is expected to arrive in town tonight and take a physical Thursday. He will compete with Cory Procter to be the backup behind Andre Gurode. Procter served as the primary backup at center and guard in 2008. On Wednesday coach Wade Phillips all but ruled out backup guard Montrae Holland playing center after Holland struggled with snaps during training camp. "I know he can play guard," Phillips said. "We'll keep working on that. If we feel strong about it, we'll put him in a game [at center]."