Sevilla sporting director Monchi believes the key to unlocking Anthony Martial's true potential is by making sure the French forward is happy.
Martial, 26, left Manchester United on loan in the January transfer window after becoming frustrated by a lack of regular playing time at Old Trafford.
Sevilla had been chasing Martial's signature throughout the window and made a breakthrough in negotiations when they agreed to cover the majority of his salary, with the player also taking a pay-cut to make the move happen.
