Career
On 2 July 2015, Tzandaris signed a four-year contract with Greek champions Olympiakos, whose latest intention is to invest in young Greek prospects that will develop into the team"s core. Aiming towards this direction, the Greek club also signed Stefanos Kapino, Dimitris Goutas, Dimitris Kolovos and Giannis Gianniotas, adding to the club"s existing talent as the likes of Kostas Fortounis, Andreas Bouchalakis, Tasos Avlonitis and Andreas Gianniotis among others Tzandaris" natural fitness, stamina and box-to-box play will provide Olympiakos with a reliable back-up solution behind Giannis Maniatis in the club"s midfield.
On 19 January 2016, since he did not manage to earn a single appearance with the club in Super League, signed a six months" contract with Panionios on loan from Olympiakos.
On 23 January 2016, almost six months after his last appearance in Super League, he made his debut with Panionios in a 0-0 home draw game against Asteras Tripoli as a substitute.