On 24 May 2013, the eve of the 2013 Champions League Final between Bayern Munich and Borussia Dortmund, Sokratis completed a €9.5 million transfer to Dortmund.
Am 24 Mee 2013, den Virowend vun der 2013 Champions League-Finale tëscht Bayern München an Borussia Dortmund, huet Sokratis en Euro 9.5 Milliounen Transfer an Dortmund gemaach.