There is a clip of Stephen Welsh as a small boy, grinning into his mum's camera, wearing a Celtic shirt with 'Lennon 18' on the back, having just scored in an indoor kickabout with his mates. He looked like the most contented kid on the planet. Twenty-odd years later, that same smile is still there — only now the backdrop is Lesser Hampden on a Monday afternoon in international week, and the contentment comes from something rather more substantial than a tap-in on an artificial surface.

Welsh, 26, is three caps into his Scotland career and already looking like he belongs. Composed in the challenge, tidy with the ball at his feet, and convincing alongside fellow recent call-up Luis Binks, he has made the most senior stage look far less daunting than the long road that brought him here might suggest.

A Boyhood Club That Never Quite Had Room

The story starts, naturally, at Celtic. Welsh spent 18 years in and around the club — academy all the way through, then the professional game, then the slow-burn frustration of being a capable centre-half at a club that kept signing more centre-halves. Carl Starfelt, Liam Scales, Cameron Carter-Vickers, Yuki Kobayashi, Moritz Jenz, Maik Nawrocki, Gustaf Lagerbielke, Auston Trusty. It reads like a squad list in its own right. Along the way, Welsh turned down approaches from Udinese and Toulouse because he wanted to fight for his place at Parkhead. He made 70 appearances in total. Ultimately, it was not enough.

"At a club like Celtic, they always want to improve, bring in more players because that keeps the competition," Welsh says, without a trace of bitterness. "It's football. You're not guaranteed to play even though you want to. For your boyhood club, to play every game, would have been the best-case scenario. Unfortunately, that didn't happen. I'm a big boy, I can accept that."

That kind of equanimity is not easily taught. Welsh points to the mental side of the game as the factor people underestimate — the support network of family, friends and a trusted agent, and the refusal to let a difficult situation become a personal crisis. "Psychologically, it can affect players but I don't think it affected me too much," he says. "The best players technically probably don't always get to the top. It's the players that are mentally strong." He namechecks John McGinn and Andy Robertson as the models — elite footballers, yes, but elite competitors first.

Mechelen, Motherwell and a Manager Who Believed

A loan spell at Mechelen in Belgium gave Welsh some of the regular game time he craved before the decision that truly changed his trajectory: a permanent move to Motherwell. One conversation with manager Jens Berthel Askou was all it took. The Dane handed Welsh consistent minutes, consistent trust and the platform to rediscover himself as a footballer. Welsh describes Askou as his greatest influence in the game, and the numbers backed it up — good enough to earn a move to Swansea City, where he is currently helping the Swans push at the top of the Championship.

From Fir Park to the top of the English second tier to a Scotland shirt. It is the kind of career arc that gets romanticised in retrospect but felt anything but inevitable at the time.

Relief in Skopje, a Test at Hampden

Scotland's Nations League window has had its turbulence. A 3-0 defeat to Switzerland, played for the best part of 80 minutes with ten men after Jack Hendry's early red card, left a sore feeling in the camp. Welsh was candid about it: "We had to suffer for a good 80-90 minutes. That can take its toll mentally."

The response in Skopje was sharper. A 2-0 win over North Macedonia put Scotland's first victory of the campaign on the board, and Welsh felt the relief that comes with a performance that reflected the squad's actual quality. "We felt there could have been a lot more goals," he said. "Five or six and you probably couldn't have argued."

Now Slovenia arrive at Hampden on Tuesday evening (19:45 BST), and the chance to close the window on a positive note. For Welsh personally, it is another opportunity to prove that this level is where he belongs — not as a novelty or a squad filler, but as a genuine Scotland defender.

The kid in the Celtic shirt with 'Lennon 18' on the back took the long way round. He got there all the same.

Frequently asked

How many caps has Stephen Welsh got for Scotland?
As of this international window, Stephen Welsh has earned three caps for Scotland, all of them recent as he has established himself in the squad.
Why did Stephen Welsh leave Celtic?
Welsh left Celtic after finding consistent first-team opportunities hard to come by. The club repeatedly signed new centre-halves, limiting his appearances despite him making 70 appearances for the club over his career.
What club does Stephen Welsh play for now?
Stephen Welsh is currently playing for Swansea City in the EFL Championship, where they have been among the top clubs in the division.