Arsenal and Brentford have concerns after Scotland earned a dogged comeback victory over the Republic of Ireland at Hampden in their Nations League group.
John Egan volleyed Ireland ahead early on, but Jack Hendry's header levelled.
Both sides spurned big chances before Alan Browne was penalised for handball and Ryan Christie stroked home the penalty winner eight minutes from time.
That puts Steve Clarke's side two points clear of Ukraine, who briefly went top with a 5-0 win in Armenia.
However, Scotland head into their final group game in Krakow, Poland, with more injuries worries after full-backs Kieran Tierney and Aaron Hickey, of Arsenal and Brentford respectively, were both forced off, while a late yellow card for Scott McTominay rules the midfielder out through suspension.
Ireland, meanwhile, can now finish no higher than third in the group.