Chilean sources say United are considering the teenager as a possible replacement for Cristiano Ronaldo, whether in the long or short term.

"It was around two months ago," agent Fernando Felicevich told La Cuarta. "And [Manchester United] not only made an approach but also presented an offer that did not meet either Udinese or Alexis' requirements so it was rejected.

"The figure that Udinese rejected at the time was extremely important."