Tierney quit Celtic, his boyhood club, to sign for Arsenal in a deal worth a reported fee of £25 million this summer.

The Arsenal left-back Kieran Tierney has sent a message to one of his former Celtic teammates on Instagram.

Tierney quit Celtic, his boyhood club, to sign for Arsenal in a deal worth a reported fee of £25 million this summer.

But he has not forgotten those he left behind – not least his long-time defensive colleague, Jozo Simunovic.

Adding to his story on Tuesday evening, Tierney posted a photo of himself with the Croatian and the Celtic physio, David McGovern.

And he wrote: “Get well soon my man(.) Praying for u(.)

“Class seeing u 2!”

Simunovic had earlier posted a photo of himself after undergoing knee surgery.

But, according to BBC Sport, the 25-year-old is expected to miss weeks rather than months.

Tierney has also struggled for fitness this season, with a hip problem having prevented him from making his Arsenal debut.

Celtic still have Kristoffer Ajer, Christopher Jullien, Hatem Abd Elhamed and Jack Hendry capable of covering for Simunovic.

Celtic fans – how important a player is Simunovic to the Bhoys?

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