TWENTY-SIX days after taking the last tackle of the NRL season, Marieke Koroibete is set to take a seat on the Wallabies’ plane to London on Friday as part of the Spring Tour squad.

Koroibete is expected to be named by Michael Cheika when an extended 36-man squad is released, ahead of the Wallabies’ departure on a five-Test tour against Wales, Scotland, France, Ireland and England.

The former Storm flyer is scheduled to play for the Robbie Deans-coached Barbarians while in Europe but the absence of Samu Kerevi for the tour could also see Koroibete come into contention for a Test debut as an outside back.

Kerevi suffered syndesmosis in his ankle at Eden Park and on Monday posted “Time for Surgery” on social media. He won’t be back in 2016.

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Koroibete after the Storm’s heartbreaking grand final loss. Picture: Colleen Petch. Source: News Corp Australia

Tatafu Polota-Nau is another player expected to stay at home, with an arm injury to the veteran Test hooker still yet to recover.

In a new twist, it is understood Cheika will name three young development players in the tour squad as well — Taniela Tupou and Izaia Perese from Queensland, and Jack Dempsey from NSW.

The trio will not be considered for Test selection but the trip will be used for the rookies to gain experience and familiarise themselves with the Wallabies systems.

Nineteen-year-old centre Perese has not even made his Super Rugby debut for the Reds yet but has impressed in two seasons for Queensland Country in the NRC. Dempsey, 22, was a regular starter for NSW.

Taniela Tupou’s eligibility for Australia A is under a cloud. Picture: Jerad Williams Source: News Corp Australia

Tupou, known as “Tongan Thor”, has also debuted for Queensland but he is not eligible for the Wallabies until November 2017 due to World Rugby’s residency rules.

It remains uncertain whether Tupou can even play for Australia A in a midweek clash in France in late November.

The other rookies, Koroibete and a range of other Aussies selected to play for Barbarians’ matches in Europe — including Will Skelton, Toby Smith and Nick Stirzaker — are expected to play for Australia A against the French Barbarians.

There were plans to play more midweek games against English clubs but they fell through, leaving just the French Barbarians game. It is likely to be played the week after Australia play France in Paris on November 21.

Dean Mumm copped a one-match ban for striking. Source: News Corp Australia

Flanker Dean Mumm will miss the first Test against Wales on November 5 after pleading guilty to striking Brodie Retallick in Auckland.

In determining a sentence, SANZAAR duty judicial officer Robert Stelzner acknowledged Mumm “acted instinctively in retaliation to his being illegally held back by his opponent upon trying to rejoin play​”.

​”​His opponent was behind him when he tried to extricate himself from his opponent’s grip and in that process struck his opponent in the face with his elbow​,” he said.