Ex-Green Bay Packers RB Jamaal Williams says he’s joining Detroit Lions

The Detroit Lions are bringing in a new complementary back to play alongside D’Andre Swift, agreeing to terms with running back Jamaal Williams.

Williams, who will turn 26 on April 3, confirmed the agreement in a tweet Tuesday night. He is likely to replace free agent Adrian Peterson, who had been Detroit’s No. 2 back next to Swift last season. Detroit also has its former starting…