The Browns voided their trade with Seattle for guard John Moffitt today because of health concerns a league source said.

Hours after the trade was voided the Seahawks traded Moffitt to the Broncos for defensive tackle Sealver Siliga.

The Browns will retain the rights to defensive lineman Brian Sanford who had been shipped to the Seahawks in the trade for Moffitt.

Moffitt talked to the media in the locker room before practice and then pulled on his shells and jersey and headed out to the practice field helmet in hand. But before he even began warming up coach Rob Chudzinski escorted him back to the locker room and was overheard telling him they would take care of it upstairs.

Moffitt a third-round pick of the Seahawks in 2011 out of Wisconsin was set to compete with rookie Garrett Gilkey for the starting right guard job in the absence of the injured Shawn Lauvao and Jason Pinkston.

Moffitt who started the first nine games of his rookie year tore knee ligaments and underwent surgery that season. Last year he underwent elbow surgery in training camp. It's uncertain what the Browns were concerned about.

For now Gilkey is back as the frontrunner for the job but the Browns will be on the lookout for another guard.

As it was Gilkey said he was not upset about the trade for Moffitt when he learned of it.

“No over-reaction'' he said. "You need to come in and put forth our best effort and work as hard as you can. If anything it’s more motivation to keep getting better and refine my technique and my practice out on the field.”

Sanford (6-2 280) was originally signed by the Browns as an undrafted free agent out of Temple in 2010. He's appeared in six games including one last season. He spent the first seven weeks of last season on the practice squad and appeared in one game before placed on injured reserve with a knee injury.

Sanford has been a third-string end this preseason.