Arsenal defender Kieran Tierney will miss Scotland's Nations League decider with Ukraine on Tuesday.

Tierney started last week's 3-0 win over Ukraine in Glasgow and Saturday's 2-1 success against the Republic of Ireland.

However, the left-back was replaced after a head knock during the first half against the Irish.

Scotland will win Group B1 if they avoid defeat against Ukraine, whoneed three points to finish on top.