In a short time Mijailović showed his potential and he became a first team player at the age of 17. He began playing football as a defensive midfielder.[1]
On 8 February 2017, he signed a contract with Russian club Krylia Sovetov Samara.[2] On 22 February 2019 Krylia Sovetov removed him from their roster.[3] He was added back to Krylia's squad on 8 July 2019.[3]
On 24 May 2020, Krylia Sovetov announced that his contract (that was set to expire on 31 May) would not be extended.[4]
International career
On 31 May 2012, Mijailović debuted for Serbia in a friendly match against France at the age of 18.[5]
Mijailović was selected in Serbia's squad for the UEFA Euro 2024. He played in a group stage match, against Denmark.[6] Serbia finished fourth in the group.
