(WNFL) - Matt Flynn is back with the Green Bay Packers. Various media reports said the sixth-year pro signed with the team last evening, as an apparent backup to Scott Tolzien. Packers' coach Mike McCarthy re-iterated yesterday that Tolzien would make his first N-F-L start on Sunday against the Giants at New York. Tolzien, the former U-W Badger standout, threw for 280 yards and a touchdown in last Sunday's Packer home loss to Philadelphia. McCarthy said Flynn looked good during his workout with the team yesterday. His biggest advantage is that he knows the Packer offense, which has changed little since he left as a free agent at the end of the 2011 season. Offensive coordinator Tom Clements said the terminology and the basic plays are the same. Flynn is reported to have problems with an elbow -- and any questions about his ability to play will be answered during the practices for the Giants game which begin tomorrow. Meanwhile, there are questions about what will happen with Seneca Wallace, the original backup to the injured Aaron Rodgers. Wallace injured a groin in the game two days ago, but McCarthy said he still could have played in an emergency. Wallace played just one series against the Eagles. Also, media reports said the Packers were planning to bring in veteran quarterback John Skelton today. He was with Cincinnati and San Francisco earlier in the year. Before that, Skelton started 17 games with Arizona over three years.The Packers' offensive line remains a question mark, after injuries to two starters in the loss to Philadelphia. Center Evan Dietrich-Smith and tackle Don Barclay both went out with knee injuries. Coach Mike McCarthy says he won't know at least until the end of the week whether they can play on Sunday against the Giants at New York. Six players were hurt against the Eagles, and McCarthy says all six claim they're okay. The coach says he won't know for sure until the team returns to practice tomorrow. When Dietrich-Smith went out, T-J Lang finished the game at the center -- his first game at the position at any level in his career. McCarthy says he's uncertain whether lineman Derek Sherrod can return yet. Sherrod has just returned to practice after breaking a leg in December of 2011. Meanwhile, the coach had no further updates on the other injured Packers from the Philly game. Linebacker Nick Perry hurt a foot, corner Casey Hayward injured a hamstring, and defensive end Johnny Jolly and quarterback Seneca Wallace both had groin injuries.