Meet the Bayer Leverkusen mastermind who helped Xabi Alonso take the club from 17th to undefeated Bundesliga champions... and how he recruited the likes of Victor Boniface, Alejandro Grimaldo and Florian Wirtz

Bayer Leverkusen's remarkable season has largely been put down to the brilliance of Xabi Alonso (top right), however, there is the man behind the scenes who can also be credited.