 When the new Karaiskakis was completed in 2004, Ethnikos was struggling in Gamma Ethniki, and did not move into the stadium; the team instead continued to play most of its home matches in Nikaia Municipal Gymnasium (2002-2005), a small stadium in the Nikaia area of Piraeus, which is the traditional home of Proodeftiki F.C..In 2005–06 Ethnikos moved to Georgios Kamaras Stadium in Rizoupoli (where Olympiacos played its home matches during the Karaiskakis renovations), and played there one more season until the move to Elliniko in 2007.Despite a clause in the contract of Olympiacos's long-term lease of the stadium, which states that Ethnikos may return to Karaiskaki whenever they wanted, without sharing any significant stadium-related costs, the team has opted not to return to Karaiskaki in the near future.