It was a special moment for the midfielder and his family as he prepared to made his debut for the club he's supported since he was a kid in a stunning Old Firm win.
But it was also a moment to remember someone who played a huge part in getting him to Parkhead.
McCowan soaked up the atmosphere before kick-off and his thoughts were about his Celtic-daft agent and friend John Kavanagh, who tragically passed away in April following a battle with cancer.
The former Dundee lad said: "It was probably, when 'You'll Never Walk Alone' was playing. I'd be sat in the car with him listening to it on the radio previously.
"It was obviously amazing but also having a wee thought of 'I know you're with me here'. It was obviously something that I thought about when this move was happening, what it would've meant to John.
"Coming on for my debut against Rangers, I think John would have been greeting his eyes out if he had been able to see that.
"He was a bit like an uncle to me in football. And it was a sad time, obviously, when he passed. It was a real shock, because he was a very, very private guy.
"He was actually very outspoken, but very private with his own life.
"And I never even knew until a month before he passed. I was just gutted, because I didn't get to catch up with him, I didn't get to see him or anything.
Diese Geschichte stammt aus der September 10, 2024-Ausgabe von Daily Record.
Starten Sie Ihre 7-tägige kostenlose Testversion von Magzter GOLD, um auf Tausende kuratierte Premium-Storys sowie über 8.000 Zeitschriften und Zeitungen zuzugreifen.
Bereits Abonnent ? Anmelden
Diese Geschichte stammt aus der September 10, 2024-Ausgabe von Daily Record.
Starten Sie Ihre 7-tägige kostenlose Testversion von Magzter GOLD, um auf Tausende kuratierte Premium-Storys sowie über 8.000 Zeitschriften und Zeitungen zuzugreifen.
Bereits Abonnent? Anmelden
Reds revel in record turnover
HIGH-FLYING Aberdeen have announced a record turnover of £23.6million but recorded a loss of just under £900,000 because their big-money sale of Bojan Miovski falls into next year's account.
JUDGEMENT GRAY DOESN'T SCARE ME
Hibs boss: I didn't fear boot after Saints horror show but I need to start winning
Tumilty sets a mouser trap for Rovers
The Hamilton Accies right-back is re-growing a moustache for his annual Movember fundraiser.
Solid gold chance for Euro stars Mouat & Co
BRUCE MOUAT and his Scotland team edged closer to a fifth European curling title after beating Yannick Schwaller's Swiss rink in yesterday's semi-finals in Lohja, Finland.
Ronnie on his dedication to game - SECRET TO SUCCESS IS POTS OF HARD GRAFT
RONNIE O'SULLIVAN believes his dedication to the craft has been overlooked during his journey to become snooker's greatest.
THE FED OF WINTER
Tesco to help collect millions of meals for hard-up families
Machete mob home raid terror of pregnant TV star
MACHETE thieves attempted to rob the home of pregnant Geordie Shore star Charlotte Crosby.
ISLE SHOOTING SUSPECT 'FELT LIKE A VICTIM'
Accused told doc he'd had nervous breakdown
Hancock 'put reputation before saving Covid lives'
A GRIEVING daughter has accused Matt Hancock of being more concerned with saving his reputation than saving lives.
I never thought I would ever feel joy or happiness or just laugh at a joke or anything..
Olympian Chris finds hope amid cancer fight