Kieran Tierney insists he is doing everything in his power to be fit enough for the biggest match of his career on Friday.

The Arsenal defender broke his silence on the agony of missing the start of Scotland ’s Euros campaign on Monday and is refusing to accept that his calf injury will keep him out of the crunch clash with England at Wembley.

Tierney stayed behind at Scotland’s Middlesbrough training camp on Sunday and Monday as his team-mates were crashing 2-0 to the Czechs, as he used every hour available to him for treatment and rehab.

And the 24-year-old is adamant he’s given himself a shot at Friday’s showdown.

He said: “I’m getting better. I trained today, I’ll train tomorrow and the decision will probably be made tomorrow afternoon or even on Friday before the game.

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“It’s just so unlucky because I worked so hard to get back from my knee injury. I came back quickly from that, played a few games.

“I don’t know if those few games caught up with me and I just got a wee niggle. That’s all it is, just a niggle. It’s touch and go.

“The pain itself probably wouldn’t stop you playing. It’s if you played on it, it could get a lot, lot worse and you could get out for a lengthy time.

“You can’t risk it, not with calves.”

Asked if his chances were around 50/50, Tierney who trained wearing a pair of compression tights in the searing heat for added protection, added: “It probably is, aye.

“I did most of the training. It was more of a precaution to not do everything to the end but I did most of it.

“I’m just doing my best to be fit for Friday night. Me wearing a pair of tights shows you that. When am I wearing tights?”

That was said with a smile but the former Celtic star is deadly serious in his belief that Scotland can get a result with or without him.

“We’re going to go down there and fight for everything,” he insisted. “It’s a derby. It’s a big rivalry in football. We’re looking forward to it.

“There is no doubt about it, we’re really looking forward to this game.”