Multiple reliable new sources are reporting that Man Utd have submitted a concrete bid for Rafael Leao. The forward remains under contract at Milan, but the opening offer has opened the door for discussions between the two clubs - though it is unclear at this stage whether the current bid will be enough to tempt them to part with a prized asset. Man Utd are still pushing to finalise terms. However, Liverpool, Chelsea and Arsenal are still watching closely and may return with offers of their own. At 1.76 goals scored per game this season, Man Utd already pose a big threat. Rafael Leao would be expected to maintain that level and give them another reliable option in attack. Milan have also been linked with Manuel Ugarte, Mario Gila and Noah Atubolu while Man Utd are reportedly monitoring Exequiel Palacios, El Hadji Malick Diouf and Gregor Kobel. Looking for Man Utd transfer rumours? Follow us on Twitter @PlayerSwitchCom for more rumours just like this.