Unai Emery has truly transformed the fortunes of several Aston Villa players, and one of those is Douglas Luiz. Unai Emery has transformed Ollie Watkins into one of Europe’s most deadly strikers. He’s dragged Leon Bailey from zero to hero in a matter of months with the Jamaican having the season of his life. It could be argued, though, that the most impressive transformation of them all has been Douglas Luiz. When Emery arrived at the club, he was seen as a number 6, a midfield anchor whose sole purpose was to win possession back and protect the defence. Now, he’s matching – or even surpassing…