1. Stefanos "Klaus" Athanasiadis is a Greek retired professional footballer who played as a striker.

1. Stefanos "Klaus" Athanasiadis is a Greek retired professional footballer who played as a striker.
Stefanos Athanasiadis spent a season with the local team before moving to Thessaloniki.
In 1996, Stefanos Athanasiadis joined PAOK's junior academy, initially playing as a central midfielder.
Stefanos Athanasiadis's stay at Trieste was short-lived as both he and his family could not adapt to their new life.
Stefanos Athanasiadis returned to the junior squad in PAOK in August 1998 and worked his way through the ranks of the academy, showing his scoring abilities and talent with the ball, with the help of junior coach Kostas Malioufas, who established him as a striker.
Stefanos Athanasiadis's performances earned him a professional contract for three years.
Stefanos Athanasiadis renewed his contract in 2008 for a further 5 years.
Stefanos Athanasiadis was working hard to find a place in the starting eleven, yet was overshadowed by more experienced players like Zlatan Muslimovic and Lambros Choutos and was mostly used as a late substitute by Fernando Santos.
Stefanos Athanasiadis needed to gain experience as a hot prospect for the future.
Stefanos Athanasiadis got 22 caps in the Football League scoring 5 goals.
Stefanos Athanasiadis got 4 European caps mainly as a substitute.
On 12 September 2014, Stefanos Athanasiadis renew his contract with PAOK till the summer of 2018.
Stefanos Athanasiadis had a huge contract, one of the two largest in the roster, his annual salary more than tripled.
On 29 September 2016, Stefanos Athanasiadis netted both goals as PAOK recovered from a nightmare start in the Europa League group stage against FC Slovan Liberec when Russian Nikolay Komlichenko scored the opening goal for Slovan in 41 seconds.
On 22 August 2017, Stefanos Athanasiadis completed his move to Maccabi Haifa.
On 8 January 2018, Stefanos Athanasiadis netted home the winning penalty to send Maccabi Haifa to the Last 16 of the Israeli State Cup.
Stefanos Athanasiadis had had a disappointing spell in Israel since joining the club over the summer, but was the hero on this game for the Haifa side.
On 7 September 2018, after his departure from Maccabi Haifa, Stefanos Athanasiadis eventually found himself a new club, penning a two-year deal with PAS Giannina.