League sources told ESPN and NFL Media on Wednesday that Williams is signing a one-year deal worth up to $6.2 million with the Lions. The pact, which will reunite Williams with former head coach and current Lions offensive coordinator Anthony Lynn, is worth $4.7 million in base salary.
Williams missed the entire 2020 season because of a torn shoulder labrum that required surgery. The Raiders released him last month.
The 29-year-old Williams signed a four-year, $44.4 million deal that included $22 million guaranteed with the Raiders as a free agent in 2019. According to Spotrac, Las Vegas saved $11.6 million against the salary cap by releasing the wideout.
Williams recorded 42 receptions for 651 yards and six touchdowns for the Raiders in the 2019 season, his first with the team. He missed two games that year because of plantar fasciitis in both of his feet.
The veteran receiver spent the first four seasons of his NFL career with the Chargers. He notched 155 catches for 2,530 yards and 17 touchdowns in 55 games. His best season came in 2016, when he caught 69 passes for 1,059 yards and seven receiving scores.
The Lions could have a revamped wide receiver corps in the upcoming season, as Kenny Golladay, Marvin Jones Jr. and Danny Amendola are scheduled to become free agents this month. Golladay could be a candidate to receive the team's franchise tag.