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Green Bay Packers right tackle Bryan Bulaga was not present during the portion of practice available to the media on Wednesday.

Bulaga sustained a concussion during the second half of Sunday's 21-13 loss to the Buffalo Bills. Second-year offensive lineman JC Tretter finished the game in his place and likely would start if Bulaga isn't cleared in time for Sunday's game against the Tampa Bay Buccaneers.

Cornerback Davon House, who missed the Bills game with a shoulder injury, was at practice, but not suited up. Packers coach Mike McCarthy said Monday he'll be hard-pressed to play against the Buccaneers. Left guard Josh Sitton, bothered by a lingering toe injury, and outside linebacker Mike Neal rode stationary bikes and didn't appear to be practicing. It wasn't immediately known why Neal was sitting out.

The Packers also announced the signing of former Bethune-Cookman safety Jean Fanor to the practice squad. The 6-foot, 205-pound Fanor was originally signed by the Kansas City Chiefs as a undrafted free agent in 2012 and was in training camp with them that year.

He played for the Tampa Bay Storm of the Arena Football League in 2013 and 2014. He set a team record with 128.5 tackles in 18 games this season. He will wear No. 20 for the Packers.