John McGinn
After suffering a broken ankle in December, John McGinn will not only miss the qualifying stages for Scotland but also the Euros if they progress. This will be a major blow for the Scotts, who will miss one of their best players which may see them fail to qualify. The Aston Villa midfielder has proven himself on countless occasions this season which has seen him score 3 goals and assist two in his debut season in the Premier League.
Since the injury to McGinn, Aston Villa have suffered significantly, dropping down to 17th and one point away from the relegation zone, and haven't been able to replace the Scotsman's tenacity in midfield. This is something that Scotland may also struggle to replace the likes of Scott McTominay would be among his potential replacements ahead of the summer.
The injury also means that McGinn will miss the trip to Wembley and therefore the Carabao Cup final against Manchester City where Aston Villa will play the role of the underdogs in their first appearance at the iconic stadium since last season's Championship Playoff final.