"Christian Clemens is a Germany Under-21 player with enormous potential," said general manager Horst Heldt. "We're delighted to have secured the long-term services of another German talent. He's a quick, versatile attacking player with a powerful shot who can play on either flank or in the middle," he continued. "He's also very ambitious and has a special mentality."
Clemens says he is looking forward to the new challenge: "I had 12 great years at Cologne but now I'm delighted to be wearing the royal blue shirt. Schalke are one of the top clubs in Germany and Champions League hopefuls. You don't get an opportunity like this very often."
Clemens began his playing career at SC Cologne Weiler-Volkhoven before joining the youth setup at FC Cologne. He played for all the club's youth teams and in the 2010/2011 season he made his senior debut at the age of 19 in the first round of the DFB Cup. His first Bundesliga appearance came at home against St Pauli on 12 September 2010. He made a total of 58 Bundesliga (7 goals) and 31 second division appearances (6 goals) for the Rhinelanders.
On the international front Clemens first played for Germany at under-15 level and has represented his country in every age category since then, most recently at the 2013 European Under-21 Championship in Israel.