Pundits predict star Scotpublished at 15:29 British Summer Time 13 June
Scott Mullen
BBC Scotland in Munich
It's funny the conversations you have while standing idle waiting on a German train platform.
With Scotland's big game almost upon us, I grabbed BBC Sport Scotland's finest pundits to see who their key man will be in the Allianz Arena on Friday night.
Former Scotland striker Steven Thompson
Down the left side with Kieran Tierney and Andy Robertson is an area of the pitch which has given us so much joy, we look to build down that side.
But I think John McGinn could be the key man. His goal record for Scotland is brilliant. His energy and enthusiasm rubs off on everyone else.
Ex-Scotland midfielder Leanne Crichton
John McGinn. His performances, the way he galvanises the squad and fans, I think his energy levels are incredible.
He's great on the ball and he's always capable of coming up with a moment of magic.
Former Scotland winger Neil McCann
Everyone. It's a collective effort for this one. Scott McTominay has been talismanic, as has McGinn.
Tierney has been superb for us on that left side because he allows Robertson to get up, so we'll need everyone.