Johnstone signs up to 2020 vision

years, especially working with Chezzy [Chester].”

Wakefield chairman Michael Carter added: “It’s vitally important that we manage to retain our academy products and this might just put a few rumours to bed for a while.”

Wakefield are hoping to reach Wembley for the first time since 1979 but are significant underdogs given their opponents’ pedigree. Warrington, who finished second in the Super League, have won the Challenge Cup three times in the past seven years alone and are awash with gamebreaking talents.

However, they lost 36-28 at Wakefield in May and have been beaten at the semi-final stage in the last two seasons. In-form Wolves centre Ryan Atkins, who joined Warrington from Wakefield in 2010, said: “Wakefield will always hold a special place in my heart.

“I look out for their results and get to games whenever I can.

“They are one of those clubs who will always be underdogs, they don’t have the finances of other clubs but they rely heavily on team unity.”