Scotland midfielder Billy Gilmour will miss his final Euro 2020 group match against Croatia after testing positive for COVID-19.
Gilmour, 20, was adjudged Star of the Match for his performance in Scotland's 0-0 draw with England at Wembley on Friday but will now miss their crucial match against Croatia at Hampden Park on Tuesday.
"The Scottish FA can confirm that Billy Gilmour, a member of the Scotland national team, has tested positive for COVID-19," the statement read.
"Following liaison with Public Health England since the positive test was recorded, Billy will now self-isolate for 10 days and will therefore miss tomorrow's UEFA Euro 2020 Group D match against Croatia in Hampden."
The time limit means that if Scotland beat Croatia and qualify for the knockout stages, Gilmour will miss out on his potential round of 16 tie.
This news will come as a big blow to Scotland's Euro 2020 hopes. Gilmour was brilliant against England, which marked his first international debut.
He received widespread praise for his performance, with former Scotland international Graeme Souness calling Gilmour "the best player on the pitch".
With Gilmour now absent, Scotland manager Steve Clarke will have to reconfigure the midfield for Tuesday's crucial match against Croatia. After starting at centre-half against England or starting Southampton's Stuart Armstrong, he could have opted to move Scott McTominay into midfield.
Gilmour is rated as one of the top youth prospects in the Premier League. He made 12 appearances for Chelsea last season and was named on the bench for their Champions League final win over Manchester City.