Arsenal head coach Mikel Arteta says he's unsure whether Kieran Tierney will be fit in time for Scotland's World Cup play-off with Ukraine in June.
The former Celtic left-back has been ruled out for the rest of the English Premier League season after a knee injury picks up in Scots duty last month.
It's a bitter blow for the 24-year-old, who has been tipped as a potential captain at the Emirates amid his excellent domestic form.