Chelsea and Arsenal are expected to compete with Manchester United for Sporting CP forward Viktor Gyokeres.
His worth in Portugal is reputedly £63 million, which means that all three are willing to step up.
United would be prepared to pay £63 million to sign him, potentially allowing him to follow his current manager Ruben Amorim.However, the Swedish superstar's agents are pressing for a move to a Champions League club.
Arsenal and Chelsea, who are hoping to qualify for Europe's elite league next season, are on red alert.