 He appeared in five official 2009–10 UEFA Champions League group stage matches with APOEL.After he won the championship again on season 2010–11 with APOEL, the Board of Directors renewed his contract, as they recognized that Poursaitidis was one of the key players that contributed greatly towards winning the Championship.In summer 2011, he managed to reach the UEFA Champions League group stage for the second time in his career and he appeared in nine 2011–12 UEFA Champions League matches for APOEL, in the club's surprising run to the quarter-finals of the competition.