Steelers to make changes at right guard?

Mike Tomlin promised a number of changes for Thursday night. While the secondary could see maybe three new starters, along with a change at defensive end with Ziggy Hood expected to make his 1st NFL start, the Steelers are exploring the possibility of making a change at right guard.
On Monday, the team is believed have pondered the possibility of starting undrafted rookie free agent Ramon Foster over Trai Essex against the Cleveland Browns Thursday night.