Arsenal defender Kieran Tierney must isolate for 14 days after coming into close contact with a COVID-positive team-mate on international duty.
Scotland international Stuart Armstrong has been diagnosed with coronavirus, the Scottish FA confirmed, and Tierney's close proximity to the midfielder means he began a two week period of self-isolation from yesterday.
A statement said: "The Scottish FA has been informed that Stuart Armstrong has returned a positive test for COVID-19.
"The midfielder returned a negative test for COVID-19 on arrival at Oriam on Monday but the supplementary UEFA test returned a positive result this morning.
"Stuart will self-isolate for 10 days from the date of the test – Tuesday, 6 October - and will now be unavailable for the forthcoming international matches.
"All other members of the squad have returned negative results. However, the Lothian Health Protection Team have identified two players and two members of the backroom staff as close contacts.
"As a consequence, Kieran Tierney and Ryan Christie – along with one physiotherapist and one masseur - will require to self-isolate for 14 days as of yesterday, and will also miss the forthcoming matches."
Tierney's isolation appears set to rule him out of Arsenal's Premier League game against Manchester City on September 18.
The 23-year-old's absence would be a cruel blow for Arsenal manager Mikel Arteta, who greatly values Tierney's defensive versatility. Should he indeed be unavailable for the trip to the Etihad Stadium it may prompt questions as to whether, with COVID-19 on the rise across Europe, it is wise for players to leave the bubble environments of their club to join up with other squads.
Scottish FA chief Ian Maxwell said of the diagnosis: "We will maintain constant dialogue with Dr John MacLean to ensure that those who are required to self-isolate are given the full support of the Scottish FA in conjunction with their clubs.
"Equally, the protocols and procedures in place are designed to ensure that the remaining members of the squad – who have all returned two rounds of negative tests – can continue to prepare for the forthcoming matches in a safe and secure environment."
Tierney has won 13 caps for Scotland and has featured in three of Arsenal's four Premier League games this season, missing the win over West Ham United with a minor groin injury.
