Cooper signed a contract with the Jets on Tuesday.
Cooper was released by the Lions on Monday.
Cooper re-signed with the Lions on Saturday, Adam Caplan of SiriusXM Radio reports.
Cooper recorded one tackle in six games during the 2018 season.
Cooper (back) was a full participant in Wednesday's practice.
Cooper left Sunday's game against the Cardinals with a back injury, Dave Birkett of the Detroit Free Press reports.
Cooper (hamstring) is inactive for Sunday's game against the Patriots, Kevin Fishbain of The Athletic reports.
Cooper (hamstring) is doubtful for Sunday's game against the Patriots.
Cooper (hamstring) has been ruled out for Sunday's game against the Dolphins, Rich Campbell of the Chicago Tribune reports.
Cooper (hamstring) was ruled out for Sunday's game against the Buccaneers, Rich Campbell of the Chicago Tribune reports.