has withdrawn from the Scotland squad for the World Cup qualifying double-header against Lithuania and Malta with a knee injury.
The Stoke midfielder did not travel to Vilnius with Gordon Strachan's squad on Thursday ahead of Friday night's crunch Group F fixture.
Before his side trained at the LFF Stadium, Strachan admitted the 33-year-old midfielder would be a loss.
He said: "The injury is a knee injury. He is a fantastic example of how you behave as an international player, a top player on and off the pitch."