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There’s a fine line that separates bravery from naivety.

And as Celtic suffered a thumping 4-0 defeat to Bayer Leverkusen in the Europa League, Ange Postecoglou’s men charged across it with reckless abandon, looking about as comfortable with those play-out-from-the-back tactics as a suspicious father meeting his daughter’s tattooed, motorcycle-riding boyfriend for the first time.

However, while Celtic didn’t put up much resistance, going through what looked like an existential crisis in front of an irate Parkhead crowd, the performance of Florian Wirtz still felt like a coming of age display on the European stage. It was justification for the claim that, alongside fellow 18-year-old Jamal Musiala, the Bundesliga is home to yet another superstar in waiting.

Every Under-20 World Cup Golden Boot Winner: Where Are They Now?

Every Under-20 World Cup Golden Boot Winner: Where Are They Now?

“His goal rate and participation are outstanding for his age,” former Bayern Munich and now Germany coach Hansi Flick told Sport1 this week after handing Wirtz his third international call-up.

Flick’s not wrong.

In just eight games this season, Wirtz has six goals and five assists to his name, a close-range tap-in being the cherry on top of a masterful performance in Glasgow last week.

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“Florian is a huge asset for this team through his carefreeness,” Flick added recently. “He’s simply an outstanding technician, loves to play, very creative, has a good shot, runs hard and is quick.

“He’s got a good total package.”

Arsenal and Liverpool would both love to sign Florian Wirtz

According to BILD reporter Christian Falk, a who’s who of European giants are already chasing Wirtz, including Premier League giants Manchester City, Arsenal and Liverpool.

In truth, it would be a dereliction of duty if they weren’t chasing him.

Players like Wirtz only come around a few times in a generation and if he is, as some have claimed, “much better” than former Leverkusen teammate Kai Havertz, Flick may have Europe’s next great number ten on his hands.

The question is, who will be his coach at club level when he, like Havertz, outgrows the Bay Arena pond. Mikel Arteta? Jurgen Klopp? Pep Guardiola?

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In other news, Report: Chris Wilder has already set plans in motion for January arrival at Middlesbrough