NEW JERSEY, USA - JUNE 06: Scotland's John Souttar speaks to the press during an International Friendly match between Bolivia and Scotland at Sports Illustrated Stadium, on June 06, in New Jersey, USA. (Photo by Craig Foy / SNS Group)

NEW JERSEY, USA - JUNE 06: Scotland's John Souttar speaks to the press after an International Friendly match between Bolivia and Scotland at Sports Illustrated Stadium, on June 06, in New Jersey, USA. (Photo by Craig Foy / SNS Group)

NEW JERSEY, USA - JUNE 06: The Scotland squad do a lap of honour during an International Friendly match between Bolivia and Scotland at Sports Illustrated Stadium, on June 06, in New Jersey, USA. (Photo by Craig Foy / SNS Group)

NEW JERSEY, USA - JUNE 06: The Scotland squad do a lap of honour during an International Friendly match between Bolivia and Scotland at Sports Illustrated Stadium, on June 06, in New Jersey, USA. (Photo by Craig Foy / SNS Group)

NEW JERSEY, USA - JUNE 06: Scotland's Dominic Hyam applauds the fans at full time during an International Friendly match between Bolivia and Scotland at Sports Illustrated Stadium, on June 06, in New Jersey, USA. (Photo by Craig Foy / SNS Group)

NEW JERSEY, USA - JUNE 06: Scotland's Kieran Tierney and Lawrence Shankland at full time during an International Friendly match between Bolivia and Scotland at Sports Illustrated Stadium, on June 06, in New Jersey, USA. (Photo by Craig Foy / SNS Group)

NEW JERSEY, USA - JUNE 06: Scotland's Kieran Tierney and Lawrence Shankland at full time during an International Friendly match between Bolivia and Scotland at Sports Illustrated Stadium, on June 06, in New Jersey, USA. (Photo by Craig Foy / SNS Group)