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GORDON STRACHAN is set to call up Swansea’s Stephen Kingsley to challenge Lee Wallace for Scotland’s decimated left back slot.

And he may hand Charlie Mulgrew a shock return as cover.

The national boss, who’ll name his squad on Wednesday for the England clash at Wembley, has been shorn of his two first-choice left-backs in the past fortnight.

Kieran Tierney’s ankle ligament injury in training on Thursday looks set to keep him out until after the winter break, while Andy Robertson’s calf problem sustained in Hull’s EPL defeat to Bournemouth two weeks ago will keep him on the sidelines too long for the win-or-bust London showdown.

The Tierney news came as another blow for Strachan to add to the worries over Robert Snodgrass’ fitness.

But it’s understood he’s not unhappy with either of his alternatives at a slot which up until 18 months ago was a perennial problem for the national team.

(Image: SNS Group)

Kingsley, a regular with Swansea this season in England’s top flight, playing both left back and left centre-half, was given his first cap by Strachan in June when he came on as a 63rd minute sub against France in Metz.

The former Falkirk star has also impressed in his six under-21 caps.

Mulgrew, meanwhile, made only his second start of the season for Blackburn yesterday after making a full recovery from a calf injury which kept him out for a month.

The former Celt has made two appearances from the bench in the past two weeks for Owen Coyle’s strugglers before being given the nod to face Wolves at Ewood Park yesterday.

But despite his lack of action, the 24-cap 30-year-old is understood to be on the manager’s radar for consideration, although his lack of match action against the kind of pace England have too offer is a concern.