On 7 August 2013, Tunku Ismail Ibrahim, the president of Malaysian club Johor Darul Ta'zim, confirmed that Aimar had signed a two-year contract with the team. Upon arrival, he became the highest paid player ever to feature in the Malaysia Super League. He made his debut in the league six months after signing, in a 2–0 win against Perak FA. Prior to making his debut, Aimar had previously played at the Larkin Stadium, home of Johor, before with Argentina in the 1997 Youth World Cup. He ultimately made 8 appearances for the club and scored two goals before a spate of injuries resulted in him being released on 21 April 2014. Aimar did earn a champions medal for his time with "JDT", though, as the club went on to lift the Super League title at the end of the season.