Subway UK have hilariously trolled a Celtic fan after he complained about the sandwich giants replacing their Hot Chilli Sauce.

The food chain bizarrely reacted to the fan on social media, comparing their famous sauce flavour taste change to Kieran Tierney leaving for Arsenal.

Supporter Kevin Jack moaned: “@SubwayUK cannot believe you have replaced the hot chilli sauce with this new one, ruined subways for me now. 

“It’s surely got to make a return”.

But the sandwich outlet was having none of it and brilliant quipped back about KT.

They said: “We cannot believe Kieran Tierney is going away but that's sometimes how things go. 

“Changes happen and with the time you will see it's not a bad choice.”

Glasgow Times:

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The tweet racked up hundreds of likes and shares after it was posted.

And a number of footie fans loved the sass from Subway.

One wrote: “Subway is a Gunner.”

Another added: “Ooft Subway handing out the L’s”.

One Celtic fan didn’t take too kindly to the patter, saying: “Bhoycotted.”

It comes as Kieran Tierney’s move to the Gunners remains up in the air over a ‘tussle over £2m’.

We told previously how Arsenal have had two bids for the Celtic star booted into touch by the club who do not have to sell their prized asset.