Marshawn Lynch will be back in Oakland for the 2018 season. Beastmode will collect his $1 million roster bonus on Sunday, according to Ian Rapoport. This indicates the veteran back will be suiting up and he will reportedly be the feature back once more.That, despite former Bucs All Pro running back Doug Martin signing a one-year with the Raiders Thursday. 

Lynch is set to make $4 million in base salary in 2018 and will form a strong backfield duo with Martin.

The 31-year-old played in 15 games for the Raiders in his comeback year last season, rushing for 891 yards and seven touchdowns in a slightly underwhelming return. 

Speculation began surrounding his future when Martin inked his deal last week, but that's been put to rest now with the five-time Pro Bowler set to resume his RB1 duties in new OC Greg Olson's offense. 

As well as Martin, the Raiders have also brought in former Packers wideout Jordy Nelson in free agency as Jon Gruden looks to load up on offensive weapons for his first season back with the Silver and Black. 

GM Reggie McKenzie has made a series of shrewd additions on defense too, with former Colts corner Rashaan Melvin, ex-Lions LB Tahir Whitehead, and safety Marcus Gilchrist who played with the Texans in 2017, all singing in Oakland. 

With Derek Carr getting back to full health, and the boost given to the franchise by the return of Gruden, the Raiders will be worth watching in 2018. 

As for the backfield situation, training camp will be key for both Martin and Lynch to prove they can still cut it at the top level. 

Both have played at All Pro level in the past but have seen downturn in production in recent seasons.

Martin has had a turbulent career thus far. After a dazzling rookie campaign in which he gained 1,454 yards on the ground on 319 carries with 11 rushing TDs. He then faltered majorly, failing to go over the 500-yard mark in each of his next two seasons and missing 15 games.

He returned to form in 2015, rushing for the second-most yards in the NFL (1402) en route to an All-Pro berth. It's been downhill again though since then, in 2016 and 2017 Martin averaged a lowly 2.9 yards per attempt on 282 combined carries.

Having Lynch to push him in camp can only benefit the 29-year-old, and Gruden will be hoping the pair can rediscover top form to create a dangerous backfield tandem.