Packers General Manager Ted Thompson did not release the terms of the deal, but reports have indicated Clifton was seeking a three-year, $20 million contract, with $7.5 million of the amount guaranteed.
Clifton, 33, has been a stalwart on the Packers' offensive line since 2000 and was reportedly being wooed by the Washington Redskins. He has missed just six regular season games since 2003.
"We are happy to be able to have Chad as a member of the Packers," Thompson said. "He has been a valuable teammate and contributor to our team. We look forward to him continuing to work to help us build and prepare for a successful 2010 season."