Questions have been asked of late regarding Hakan Çalhanoğlu's time at Bayer Leverkusen, after a drop in form since his move from Hamburger SV.

The Turkish international gained plenty of admirers during 2014, including the likes of Jürgen Klopp and Pep Guardiola. However, performances since the turn of the year have took a dip.

The 21-year old midfielder has been heavily praised by those around the footballing community this season for his top drawer perfomances and incredible variety of goals.

"Hakan is an exceptional boy. He has a lot of confidence and courage. He is simply great," Winfried Schäfer.

Known mainly for his free-kicks and playmaking abilities, the youngster has been an eye catcher for many of Europe's top clubs, including the likes of Barcelona and Liverpool. However his form of late has been below the standards set by Roger Schmidt and the Bayer faithful.

Ten goals and five assists does not tell the full story as it's clear the talented midfielder has had a much greater impact on his teammates, making himself worthy of the €14 million spent to bring him down south from Hamburg.

Since the turn of the year, Çalhanoğlu has only registered one assist in 12 Leverkusen matches, scoring four goals in the process.

A call up to the Turkish national team was long overdue in Leverkusen's manager Schmidt's thoughts, and it didn't take the youngster long to make an impact scoring on his debut in a Euro qualifying win over Luxembourg.