Meanwhile, teenage sensation Gallagher has been called into the latest Scotland squad.
Berti Vogts has named the 19-year-old in his squad for next Wednesday's game against Romania at Hampden Park.
It's the young Scot's second full call-up. He won first Scotland cap in last month's friendly with Wales at the Millennium Stadium.
Fellow Rovers star Martin Andresen will also be away on international duty next week.
Andresen, the current Norwegian player of the year, has been named in the Norway squad for their game with Serbia and Montenegro in Belgrade.
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