Sokratis has been spilling Arsenal's secrets to his new Olympiacos team-mates as they prepare to meet in the UEFA Europa League for the second successive season.
The Greek team dumped Mikel Arteta's side out at the last-32 stage last season and now the draw fates have paired them together again one round further on.
Greek defender Sokratis, 32, who played in both legs last season, left Arsenal and joined Olympiacos back in the January window.
And Olympiacos winger Bruma has revealed that Sokratis has given manager Pedro Martins and the squad a full lowdown on how to get the better of Arsenal once again.