[1] Despite having André Simões and Jakob Johansson in front of him in the AEK's roster, Galanopoulos managed to earn playing time this season with the club and showed great potential for his career ahead.

[4] In AEK's title winning 2017–18 season, Galanopoulos was often included in the starting line-up by Manolo Jiménez, forming a productive partnership with André Simões in the middle.

Shielding the defence, the diminutive Greek (standing at 172 cm tall) provides an effective transition to the attacking third, able to protect possession and pass the ball forward accurately.

[8] On 18 December 2019, during the game against Asteras Tripolis, in-form midfielder was substituted with a nasty ankle injury, and subsequent medical tests have confirmed that the 21-year-old requires surgery.

[15] On 29 April 2021, he scored the opener with a header after a corner kick by Muamer Tanković but the host team responded with two goals by Michael Krmenčík and Andrija Živković, and ΑΕΚ lost 2–1 to PAOK at Toumba Stadium in the 2nd leg of the semi-final of 2020–21 Greek Cup and disqualified from the final of the competition.

On 15 August 2023, after coming off as a substitute, Galanopoulos scored a crucial goal in the 90th minute, to provide the win for his team, in a Champions League qualifier against Dinamo Zagreb.