In this Dec. 17, 2017, photo, Green Bay Packers' Jordy Nelson (87) catches a pass in front of Carolina Panthers' Daryl Worley (26). The Oakland Raiders are shuffling wide receivers, signing free agent Nelson and releasing Michael Crabtree. A person familiar with the moves says Nelson has agreed to a two-year contract on Thursday, March 15, 2018, after spending more than a day meeting with the former Packers star. (AP Photo/Bob Leverone, File)

ALAMEDA, Calif. (AP) — The Oakland Raiders are shuffling wide receivers, signing free agent Jordy Nelson and releasing Michael Crabtree.

Nelson signed a two-year contract Thursday after the Raiders spent more than a day meeting with the former Green Bay Packers star. Oakland is also cutting ties with Crabtree after three seasons, leaving Nelson and Amari Cooper as the team’s starters.

The Raiders also signed former Tampa Bay running back Doug Martin to a one-year contract and officially announced a three-year contract with blocking tight end Derek

Carrier that had been agreed to on Tuesday.

Nelson was released by Green Bay on Tuesday after a down 2017 season. He has strong ties to the Raiders. General manager Reggie McKenzie worked in the Green Bay front office when Nelson was drafted in 2008, and Oakland wide receivers coach Edgar Bennett is a former receivers coach and offensive coordinator with the Packers.

ALSO: The Detroit Lions bolstered their linebacker group with Christian Jones and Devon Kennard, and their offensive line with Kenny Wiggins.