Although born in Germany, Nikos Ioannidis moved to Greece at a very early age and made his first football steps in Pandramaikos.
On 18 April 2013, he made his debut for Olympiacos in a 6-2 Greek Cup win against Panthrakikos, coming off the bench to replace Kostas Mitroglou after 69 minutes.
"At this point we come into play, because highly talented, young players can so help us on our way and simultaneously collect valuable experience for their own careers.
The striker, who played last season 30 games for Hansa Rostock (six goals), signed a contract with Borussia Dortmund II.
[6] Asteras Tripolis officially announced the signing of 22-year-old Greek striker Nikos Ioannidis until the summer of 2018, for an undisclosed fee.