Manchester United have been told to start negotiating the signing of Viktor Gyokeres from Sporting CP with an eye to capturing him in the January transfer window.Gyokeres will cost the full value of his €100 million release clause when the transfer window opens in four weeks,

The Portuguese coach has already informed the Man Utd board that he feels the squad needs strengthening before it can compete for trophies and striker reinforcements is one of his top priorities

Gyokeres has been the subject of much transfer speculation attached to United given Ruben Amorim’s appointment from Sporting Lisbon last month following the sacking of Erik ten