Digital Image Grant Trouville © nrlphotos.com : ANZAC Test Match between Australia and New Zealand at The Sydney Football Stadium Friday the 2nd of May 2014.

Melbourne fullback Billy Slater has been forced to withdraw from the Kangaroos' train on squad for the upcoming Four Nations Tournament because of a shoulder injury.

The 31-year old will undergo surgery on Monday to repair a right AC joint injury he has been managing since State of Origin 1.

On the advice of the medical team it was decided surgery was required now so Slater can commence the three month rehabilitation phase and be ready for the start of Storm's season.

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The updated Kangaroos train-on squad is:

Cameron Smith (Storm)

Cooper Cronk (Storm)

Ryan Hoffman (Storm)

William Chambers (Storm)

Ben Hunt (Broncos)

Corey Parker (Broncos)

Josh McGuire (Broncos)

Sam Thaiday (Broncos)

Gavin Cooper (Cowboys)

James Tamou (Cowboys)

Johnathan Thurston (Cowboys)

Matt Scott (Cowboys)

Michael Morgan (Cowboys)

Jarryd Hayne (Eels)

Beau Scott (Knights)

Kurt Gidley (Knights)

Willie Mason (Knights)

Anthony Milford (Raiders)

Jack Wighton (Raiders)

Jarrod Croker (Raiders)

Josh Papalii (Raiders)

Anthony Watmough (Sea Eagles)

Brenton Lawrence (Sea Eagles)

Brett Stewart (Sea Eagles)

Daly Cherry Evans (Sea Eagles)

Luke Lewis (Sharks)

Aaron Woods (Tigers)

Robbie Farah (Tigers)

Greg Bird (Titans)

Jacob Lillyman (Warriors)