Worth as much as Tierney: Celtic have struck gold with “phenomenal” star

Work is already underway to improve Celtic’s squad in the upcoming summer transfer window as they go in search of a fifth successive Scottish Premiership title next term.

The Hoops secured their fourth league title in as many seasons with a 5-0 win over Dundee United at the end of last month, whilst they also have a chance to complete a domestic treble with an SFA Cup final clash with Aberdeen.

Brendan Rodgers has already sealed one new signing for the summer in the form of Kieran Tierney, who will officially return to Celtic when his contract at Arsenal expires at the end of June.

Kieran Tierney’s current market value

At the time of writing (11/05/2025), the Scotland international is valued at a whopping £8.5m by Transfermarkt, which suggests that the Hoops have landed a bargain by signing him on a free transfer.

As you can see in the graphic above, Tierney was sold for a staggering £25m after his terrific first spell at Parkhead after coming through the academy, as he joined Arsenal in the summer of 2019.

This shows that the Scottish giants have played a blinder with the experienced left-back because they sold him for a huge transfer fee and are now signing him back for nothing, whilst he is still valuable, albeit not as valuable as he once was.

Celtic, though, have developed their own full-back who is now worth just as much as Tierney, after they signed him for a fee of just £3.5m back in 2023, in the form of Alistair Johnston.

Alistair Johnston’s soaring market value

The Hoops swooped to sign the defender from CF Montreal for a fee of £3.5m in the January transfer window at the start of 2023 to bolster Ange Postecoglou’s options at right-back.