Video evidence: Stefan Velkov (17) has medical at Man United; Arsenal and Juventus in pursuit [Di Marzio]

Manchester United are reportedly close to signing 17 year old Bulgarian centre back Stefan Velkov, with the player completing his medical last week.

The source, respected Italian journalist Gianluca Di Marzio tends to be reliable.

The 6″3 Slavia Sofia defender was reportedly unable to agree a contract with Manchester United, allowing Arsenal to make an offer for the player.

Valued at approximately 2 million euros, Juventus and Basel are also interested in the player but lag behind the two Premier League clubs.