Jammie Kerry lashed out at the victim in the foyer of the Netherton Social Club in Bedlington, Northumberland, on December 10 22, when England were knocked out of the tournament by France, with a 1-2 win.
Newcastle Crown Court heard the victim, who was self employed and an avid golfer, landed awkwardly on his ankle, which broke and needed surgery.
He suffered months of swelling and pain and said the injury had a “massive effect” on his life.
Kerry, 29, of Princess Louise Road, Blyth, Northumberland, admitted causing grievous bodily harm.
Judge Penny Moreland said the punch was “out of the blue” and added: “He didn’t see it coming and was utterly unprepared for it. He fell extremely heavily.
“The serious injury was to his ankle, which broke as a result of the way he had fallen, was placed into a cast and required surgery. He was a man who was working renovating properties, was a keen golfer.”
Judge Moreland said even months after the attack the victim was suffering affects of the injury and added: “He was unable to manage stairs and had gone from playing 18 holes to two.”
The court heard Kerry has stayed out of trouble since the attack and has completed training courses to secure employment.
Judge Moreland sentenced him to eight months, suspended for 18 months, with rehabilitation requirements, a three month curfew and an order to pay £4,800 compensation to the victim.