When Kieran Tierney left Celtic two years ago it was a disappointing moment for everyone associated with the Bhoys.
The Hoops were losing one of their academy gems as the might of the English football once again came calling for one of their best players.
It’s been a recurring theme at Parkhead down the years and it could strike them down again when the window opens next month.
The duo could rake in pretty handsome fees but Kieran Tierney may still pocket Celtic a hefty sum as well.
That’s because of a shrewd piece of negotiating from Peter Lawwell.
That means that if the Gunners ever sell him, they could receive a tidy windfall in return.
The good news for Celtic is that the Scotland international has been so impressive in Arsenal colours.
He’s become one of their most important players, proving to be a rampant force down the left-hand side with his relentless energy.
The left-back is second for key passes per match at the Emirates Stadium and has contributed to four goals throughout the current campaign.
Tierney has caught the eye so much that in some circles, they’re touting him to be worth over £50m.
Speaking on the Go Radio Football Show this week, Barry Ferguson said: “What would you have to pay for a Kieran Tierney? I’m talking £60-£70 million and I don’t care what anybody says. If somebody wants to call in and argue about it.”
He continued: “He’s Arsenal’s top player. He’s not just Scotland’s top player. He’s so important to Mikel Arteta. He was injured there for what, four or five weeks. Only trained that week and he was straight in the team. That’s how important he is.”
Therefore, if Tierney does indeed leave north London, he could fetch Celtic as much as £10.5m.
That would be a very handy boost to the transfer budget at Paradise, especially with the Bhoys needing a mass overhaul in order to achieve parity with Rangers.
As many as 12 players could depart Parkhead this summer so Celtic chiefs will need all the money they can get their hands on in order to rebuild the squad.
The idea of a big fee arriving for a player who has already departed should have the likes of Dominic McKay and Dermot Desmond grinning from ear to ear.