Williams agreed to a two-year contract worth up to $7.5 million with the Lions on Tuesday, Tom Pelissero of NFL Network reports.
The 25-year-old expressed a desire to stay in Green Bay earlier this offseason, but after the Packers re-signed Aaron Jones, Williams will move on to Detroit. He primarily operated as the Packers' No. 2 running back and rushed for 505 yards on 4.2 yards per carry while catching 31 passes for 236 yards with three total touchdowns in 2020. He should fill a similar role in the Lions' backfield behind D'Andre Swift.