Leverkusen wünderkind Wirtz preparing for "fan madness" at Celtic Park

Bayer Leverkusen youngster Florian Wirtz has never played in front of more than 23,000 people. Celtic Park, then, should be something of a culture shock.

Leverkusen wünderkind Wirtz preparing for "fan madness" at Celtic Park
Bayer Leverkusen youngster Florian Wirtz has never played in front of more than 23,000 people. Celtic Park, then, should be something of a culture shock.