Tommy McIntyre, former Celtic B team manager, said the way in which Doak “approached things was incredible”.

The teenager’s instant impact in Merseyside typifies that.

After lighting up the Uefa Youth League, Doak made his Liverpool debut against Derby in the League Cup in November 2022, then featured in the Premier League for the first time at Aston Villa a month later.

His performances in pre-season last year had Klopp in awe.

“Oh my god” was the post-match reaction of the German after Doak’s display in a friendly against Karlsruher.

A summer in which the youngster thrived resulted in him coming off the bench in Liverpool’s opening day draw at Chelsea.

A further four appearances followed, including three starts in the Europa League group stage, before a meniscus tear ended his campaign in December.

But a recent – and brief – return to first-team training is all Clarke has needed to want to take a closer look at Doak, who has excelled at Scotland youth level.

Clarke says Doak offers his squad “something a little bit different”.

In a Scotland squad bereft of attacking pace, the teenager will have the opportunity to prove he can be a game-changer for Clarke’s side in pre-Euros friendlies against Gibraltar and Finland.

“Ben has a lot of talent,” the Scotland head coach said. “He catches your eye. Pace is something we haven’t got in abundance.

“I’ve never had the chance to work closely with Ben. It just seemed like the right opportunity to put him in. We’ll have a look and see how he does.”