[2] According to "footballscout24.it" website, Katranis was the only Greek player to feature on a list entitled “TOP 40 young talent in world football – born in 1998″.

Although the 23-year-old had a year left on his contract, Saint-Étienne did not have him in their plans for the upcoming season, while he himself was unhappy with the fact that he was not given any opportunity to play for the club and with being loaned out numerous times.

[7] In the first round, Katranis did not win favour of manager Bernd Storck and made only nine appearances, before returning to France at the start of 2019.

[9] On 1 August 2019, Atromitos reached the UEFA Europa League third qualifying round thanks to a 3–2 home win over Dunajska Streda at the Peristeri Stadium which gave the Athens club a 5–3 aggregate success.

[12] On 2 February 2024, Major League Soccer club Real Salt Lake announced the signing of Katranis on a two-year deal, with extension options.