Manly's Jack Gosiewski has inked a new two-year deal as the Sea Eagles resurgence pits him against the South Sydney side that declined to extend his time at Redfern due to a wretched injury run.

Gosiewski confirmed his new contract will keep him in maroon and white until the end of 2021 with NRL.com on Monday.

And come Friday the rising back-rower will be trying to bait his former teammate Cody Walker once more and reignite their running battle from a round-five clash at Lottoland.

The Rabbitohs never saw the best of Gosiewski as he rose from South Sydney's junior ranks to a 2016 Telstra Premiership debut, before tabling him a two-year extension.

Gosiewski backed himself to earn a better deal and knocked it back, only to be struck down by a torn patella tendon that ruled him out for four months.

Nerve damage in his neck and a broken collarbone had limited his game time at Souths even further, with the club declining to offer him a new deal and Manly picking him up in late 2017.

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A broken hand, then a broken arm – followed by an infection – still dogged him during his first year at Manly while Gosiewski is still managing a pelvis injury that in all likelihood should have ended his season.

But Des Hasler's faith has now translated into a genuine run in the Sea Eagles starting side and job security to boot.

"It's exciting, we're in a position where we're going well this year and we're not done yet," Gosiewski told NRL.com.