Scotland will be without Ryan Fraser, Kenny McLean, and Nathan Patterson for their crucial World Cup qualifier against Austria (Match Betting – Austria 4/5, Scotland 19/5, draw 5/2) on Tuesday evening.
Steve Clarke’s men have secured a win and a loss during this international break so far.
They were comprehensively beaten 2-0 by Denmark last Wednesday but made up for that with their narrow win against Moldova – Lyndon Dykes netting a 14th minute winner.
However, the squad will be further stretched as the trio return home due to injuries.
McLean featured in both qualifying games for Scotland while Fraser played the full 90 minutes against Denmark and likewise, Patterson against Moldova – the Rangers right-back garnering praise from Clarke for his display.
Uncapped Hibs defender Paul McGinn has been drafted into the squad for their Group F match.
The 30-year-old will link up with his younger brother John and will hope to take to the field for first time having been called up previously without playing.
Scotland (11/1 Group F Winner) are third in their group, two points behind Israel and a point ahead of Austria with an intense battle for the play offs likely.
Meanwhile, the Republic of Ireland will hope to win their first World Cup qualifier under Stephen Kenny as they host Serbia (Match Betting – Ireland 5/2, Serbia 6/5, draw 23/10).
Shane Duffy’s late equaliser meant the Republic’s blushes were spared against an Azerbaijan side without a win in 27 World Cup and European Championship qualification matches.
Realistically, Ireland (Group A Winner) have to win all four of their remaining games to stand a chance of at least a play off place for next year’s tournament in Qatar.
They were beaten 3-2 in Belgrade’s reverse fixture despite taking the lead early on and Kenny, whose only win as Republic boss came in a 4-1 friendly victory against Andorra, will be desperate for three points.