Austrian international centre back who established himself as a back-line stalwart during his time with FC Köln, helping them earn promotion to the Bundesliga. He joined Tottenham of the English Premier League in 2015.
He played youth soccer for Fußballakademie Linz before joining LASK Linz, with whom he made his senior debut in 2011.
During his one season in the Bundesliga (2014-2015), he helped FC Köln tie a league record by holding the opponent scoreless in 13 games.
He grew up in Wels, Austria and earned his first international cap in 2013.
He and Jan Vertonghen have played together on Tottenham.