Complex sentence: Whittaker was a regular for the Scotland under-21 squad, and in October 2006, he was added to the full Scotland squad for the Euro 2008 qualifying match against Ukraine, although he did not feature in the match.
Split into simpler sentences: Whittaker was a regular for the Scotland under-21 squad. In October 2006 he was added to the full Scotland squad for the Euro 2008 qualifying match against Ukraine, although he did not feature in the match.