Six changes: Scotland make huge calls for team against Ukraine - Ryan Porteous in, system alteration, surprise midfield calls

Clarke has been forced into making some huge calls in defence due to injuries to Kieran Tierney and Scott McKenna, with Hibs defender Ryan Porteous selected for his debut.

The 23-year-old will likely be part of a central defence alongside Jack Hendry, with Aaron Hickey and Greg Taylor playing as wing-backs.

In midfield, Ryan Jack comes in to replace Scott McTominay, who is suspended for the match in Poland following his yellow card against Republic of Ireland on Saturday, while Kenny McLean replaces Stuart Armstrong.

Steve Clarke has picked his team for Scotland's crucial match against Ukraine.

Ryan Fraser is preferred to Ryan Christie out wide in what appears to be a 4-5-1 formation.

In attack, Southampton’s Che Adams is recalled to the starting XI in place of Lyndon Dykes, who drops to the bench.

Midfielder John McGinn captains the team in the absence of regular skipper Andy Robertson.

Scotland will win their Nations League group if they avoid defeat against Ukraine, who would jump above the Scots into top spot if they are victorious.

Scotland team to play Ukraine: Gordon; Hickey, Porteous, Hendry, Taylor; McLean, McGregor, Jack, McGinn, Fraser; Adams. Subs: Kelly, McCrorie, Gallagher, Kingsley, Dykes, Christie, Gilmour, McKay, Ralston, Armstrong, Doig