Scotland friendlies: Stuart Armstrong and John Souttar pull out of squad

Stuart Armstrong has withdrawn from the pool of players. Picture: SNS Group

It takes the total numbers of calls-offs to six since Alex McLeish named his squad at the start of last week.

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The Scotland manager will look to replace both of the latest two injured players.

Hearts' John Souttar has also pulled out. Picture: SNS Group

Armstrong is thought to have picked up an injury after coming on as a second-half substitute on Saturday as Celtic clinched the double treble with a 2-0 victory over Motherwell in the Scottish Cup final.

Souttar has not played since Hearts’ penultimate match of the season against Celtic. The centre-half is understood carrying a hip injury.

Scotland play Peru in Lima on 29 May before flying on to Mexico City to face Mexico on 3 June. McLeish had already been dealt blows with the withdrawals of Matt Ritchie, Barry Douglas, Ryan Fraser and goalkeeper Allan McGregor.

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Motherwell’s Chris Cadden, Kilmarnock’s Stephen O’Donnell and Celtic goalkeeper Scott Bain have all been added to the travelling party in the last few days.