His contract comes with a release clause of €100 million (£84.6 million, $114.3 million) but there were claims of an agreement with Sporting to sell him for an upfront sum of €60 million (£50.8 million,

The already drawn-out saga could soon turn sour, as reports in Portugal claim Gyokeres has threatened to go on strike as he looks to force a move. But the player appears to have responded to those reports in a cryptic message posted on his Instagram page.