with a statement on the club's official website reading "Seitaridis is therefore free to negotiate with other clubs who may be interested in signing him". Return to Panathinaikos On 10 September 2009, the last day of the Greek transfer period for free agent players, Seitaridis signed a 4-year deal with Panathinaikos, returning to the team after five years. It soon became apparent that Giourkas was unfit and was struggling to re-establish himself due to frequent injuries, missing most of the 2009–10 season's matches. However, on 21 March 2010, he surprisingly returned to the line-up for the big derby against rivals Olympiacos, and despite their defeat, Panathinaikos managed to end the season positively by winning the double. Seitaridis himself didn't appear at the 2009–10 Greek Cup final against Aris Thessaloniki due to injury, but made 2 appearances on the road to the final. The 2010–11 season started well for Seitaridis, being a starter at Panathinaikos' opening league fixture against Skoda Xanthi on 27 August 2010 and giving a good performance. However, another muscle injury meant that Seitaridis would return at a league game against Panserraikos two months later, on 4 December. Due to the player's poor condition he was placed on the transfer list in January 2011, but despite various offers from foreign teams during the summer transfer period, he stayed at Panathinaikos. The 2011–12 season was even more disappointing for him, as he was only used for 45 minutes in an away game against Atromitos, where he was substituted at half-time due to poor performance. He played for a second time in an away game against Asteras Tripoli, staying on the pitch a full 90 minutes. The 2012–13 season started well for Seitaridis, playing as a starter in the first three league matches at the beginning of the season. He also contributed with one assist in Panathinaikos' 2012–13 UEFA Europa League group stage match against Tottenham Hotspur, which ended 1–1. At the summer of 2013 he didn't renew his contract and left the club. International career Youth career Seitaridis is a former Greece under-21 international, making his debut on 6 October 2000, in a 2002 UEFA Under-21 Championship qualifier against Finland under-21. He participated at the finals of the 2002 UEFA Under-21 Championship in Switzerland, where his team was eliminated from the group stage, having collected one point in three games. First steps & UEFA Euro 2004 Seitaridis made his