Manchester United reportedly want to sign Pau Torres from Villarreal, who will have to 'move mountains' to keep hold of the centre back.
Torres turned down a move to the Premier League last summer in favour of playing Champions League football with the Yellow Submariners this season.
However, the Spanish side face a greater challenge to keep hold of him in this year's transfer window with United desperate to sign the defender.
To bolster their defensive options ahead of the new campaign, the Red Devils want Torres 'at all costs' and are willing to pay up to €50million (£43m) for him, according to Marca.