LOS ANGELES (CBSLA.com) — According to multiple reports, the Oakland Raiders have agreed to a contract extension with wide receiver Michael Crabtree.

The contract is over four years and worth close to $35 million in total, with almost $19 million guaranteed.

Raiders and WR Michael Crabtree have agreed to a contract extension, per @caplannfl. Deal will be signed soon.

— Adam Schefter (@AdamSchefter) December 10, 2015

#Raiders and WR Michael Crabtree have agreed on a contract extension, source said. Deal will be signed soon.

— Adam Caplan (@caplannfl) December 10, 2015

In his first year with the Raiders, Crabtree has caught 66 passes for 760 receiving yards and 7 touchdowns.

He spent the previous six years of his NFL career with the San Francisco 49ers, where his best season came in 2012, where he caught 85 passes for 1,105 yards and 9 touchdowns.

The #Raiders and WR Michael Crabtree have agreed to terms on a 4-year extension worth $35M, source said. He gets nearly $19M guaranteed.

— Ian Rapoport (@RapSheet) December 10, 2015

This story is developing. Check back for updates.