Sources in Spain claim David Moyes is considering making a bid for the player this summer, while the Gunners and Juventus are also both said to be seriously interested.

Spanish journalist Guillem Balague revealed in February that Morata had been given the green light to leave the club in 2014.

A fee has not been agreed between Arsenal and Real at the time, with the price now likely to rise due to the interest shown from other major European clubs.

Real are understood to be desperate to keep hold of the 21-year-old but have been left with limited choices because of his contract, which is due to expire in 2015.

It leaves clubs like United and Arsenal the chance to offer him a better contract and team chances.

The move in the market for a striker could also hail the departure of Javier Hernandez who has found himself on the fringes of the United squad.