O Sporting has been working specifically behind the scenes for at least two weeks to move forward with the signing of Brazilian winger Luís Guilherme, from English club West Ham, according to what the More football. Initially, the idea of Leonine SAD involved a permanent transfer and is now heading towards a loan with an obligation to purchase, worth between 15 and 20 million euros. As our newspaper revealed exclusively last Tuesdaythe 19-year-old Brazilian is one of the Lions' priority targets to reinforce their attack in the winter market. The eventual arrival of the young Brazilian is fundamental for Rui Borges, who, in recent days, lost Geovany Quenda (injured) and Geny Catamo (present at CAN). A graduate of Palmeiras and with spells in the Brazilian national team's youth ranks, Luís Guilherme has a valid contract with West Ham until June 2029. It cost 23 million euros last season. READ MORE: everything about the transfer market