Warriors starlet Jackson was the surprise name in Frank Hadden's 33-man squad for the opening match against Wales on February 8.

He is unlikely to make it on to the bench for that game with Phil Godman in possession of the No.10 shirt and Warriors club-mate Dan Parks poised to be his back-up.

But Lineen has seen enough of his promising stand-off to tip him for big things in the near future.

The former Scotland centre said: “He is still young but everybody who works with him knows he has great potential.

“I rate him very highly. He is mature for his age, very brave, takes risks, makes the right decisions and has a cool temperament, which is well suited to international rugby.

“I certainly wouldn't have selected him for tough games against Bath and Toulouse (games he ultimately missed through injury) if I didn't think he could compete at this level.”