Per the source, United want to avoid another Paul Pogba situation. The Red Devils let the France intentional join Juventus for next to nothing four years ago and have had to shell out over £100 million to bring him back to the club.
Januzaj is not currently in the best of form but he was once highly rated, in fact Sir Alex Ferguson himself praised the young winger during his time in charge of the club.
“Adnan is a beautifully balanced player,” Ferguson was quoted as saying by the Telegraph.
“He’s only 18 and has to grow into his frame but he has good balance, good acceleration and is a very good technical player.”
Besiktas have an impressive track record developing young talent with West Ham loanee Gokhan Tore, former Arsenal youth Oguzhan Ozyakup and ex Fulham youngster Kerim Frei all thriving at the club over the past few seasons.
Januzaj has made a total of 63 appearances for the Red Devils, scoring five times since joining from Anderlecht.