Kieran Tierney is a man known to be willing to brave the elements.

And he was at it again as Arsenal prepared to host Dundalk in Thursday evening's Europa League tie at the Emirates. The former Celtic left-back is no stranger to training in freezing cold temperatures wearing just a T-shirt and shorts as opposed to covering up in hats, tracksuits and snoods.

As the rest of the Gunners side headed to the stadium in comfortable and warm looking jackets and hats, KT strolled into the stadium with just the one layer on. And fans down south could hardly believe their eyes. 

One laughed: "Tierney doesn't feel the cold, he's a machine," as another commented: "Afraid of nothing, he’s a good old fashioned footballer love it."

One supporter wrote: "Tierney is easily one of my favourites, love him." A fourth said: "Mans not hot."

While fans of Tierney's current club were surprised to see their star man wander around in just a polo, Celtic fans were not surprised at all. The defender had a habit of playing in all temperatures in just his kit. In one training session at Lennoxtown while he was still at Celtic, the Scotland cap could be seen wearing just shorts and T-shirt, launching SNOW BALLS at captain Scott Brown who, coincidentally, also wore the same.

He has previous at Arsenal, too, where he took part in a full training session in freezing cold in just his average kit - to his teammates' shock.