[2] The summer friendly international with the winners of last year's UEFA Europa League, Sevilla was a step forward in his career.
The Andalusians by having the opportunity to check him realized that he is a player with tremendous perspective, therefore they submitted a proposal to AEK Athens on a long-year loan, with a purchase option of €1.5 million,[3] but was rejected.
"I am very happy for that because it was my desire to stay here, now the only thing in my mind is working hard in order to thank the club's officials for having faith in my ability", said Tzanetopoulos, whose previous contract with AEK was expiring at the end of next season.
[4] On 28 February 2016, in a derby against rivals Panathinaikos returned to the squad after almost three months as a late substitute helping his club to celebrate a 1–0 home win.
[10] Tzanetopoulos make his debut as a substitute, on 11 October 2015, in a dramatic 4–3 win game over Hungary for Euro 2016 qualifiers.