A proposed move to Primera club Olimpo de Bahía Blanca in January 2015 fell through when All Boys asked too high a fee.[6] As Fernández established himself as a major player for All Boys, so the transfer rumours continued. In July 2015, a move to another Primera club, Independiente, seemed well on the way to completion.[7][8] Still only 20 years old, Fernández captained All Boys in the 2016 season.[9]
In June 2016, All Boys sold 80% of his economic rights to Olimpo. He had played 78 matches for the club in all competitions, and scored 3 goals.[9] The player said the offer had come at the right time for him: although he loved All Boys and was grateful for their role in shaping him as a person as well as a player, he wanted to play at a higher level and his sale had brought much-needed finance into the club.[10] He played little for Olimpo's first team – 12 appearances in the Primera, of which 7 starts – before he moved on again.[11]
Needing to replace Agustín Farías, their captain who was moving to Europe,[11]Chilean Primera División club Palestino signed Fernández on a six-month loan in June 2017;[11] the deal included options to extend the loan for a further year or to purchase.[12]
^Bendayan, Lucas (April 15, 2013). "Entrevistas: Julián Fernández" [Interviews: Julián Fernández]. All Boys Locura (in Spanish). Retrieved July 24, 2017.