Central to Gyökeres’s frustrations is a belief that he had an agreement with Sporting president Frederico Varandas to sell him for a certain fee, believed to be around €70 million (£60.4 million, $82 million). Varandas has publicly insisted Gyökeres will not be sold for such a price.

A deal for the 27-year-old striker is not done as discussions continue over the fee — but the situation is progressing towards a conclusion.

Viktor Gyokeres was Ruben Amorim’s priority target for the Manchester United striker’s position ahead of the new season, but Arsenal seemed to have edged ahead in the race.The Swede wanted