Gentsoglou moved to the defensive midfield position in the middle of the 2009–10 season and became a key player of the starting eleven.

[4] On 30 August 2014, Gentzoglou returned to Greece to continue his career in the Greek Super League, playing for Ergotelis,[5] signing a two-and-a-half-year deal.

[6] On 23 June 2015, the Serie B club Bari announced the signing of Gentsoglou till the summer of 2018 for an undisclosed fee.

[7][8] On 8 August 2016, the Prva HNL club Hajduk Split announced the signing of Gentsoglou on a twelve-month loan deal from Bari 1908.

[9] On 14 August 2016, Gentsoglou made his Hajduk debut, the 5th round of the Prva HNL, playing the first 66 minutes in a 1–1 draw with NK Osijek at Stadion Gradski vrt, before being substituted for Toma Bašić.