Darius Olaru

In May the following year, FCSB reinstated its interest and signed Olaru for an undisclosed sum, with the deal seeing him join up with the squad at the start of 2020. The Bucharest-based club reportedly outbid rival side CFR Cluj for the transfer of the player, where he was highly regarded by manager Dan Petrescu.

On 7 January 2020, FCSB announced that Olaru was assigned the number 27 jersey. On his second appearance for the Roș-albaștrii on 6 February, he scored the opening goal in a 2–1 win against FC Voluntari.

Olaru received his first call-up for the Romania national under-21 team in September 2018. On 15 November that year, he scored in a 3–3 friendly draw with Belgium in Cluj-Napoca. Olaru was consequently selected by Mirel Rădoi in Romania's squad for the 2019 UEFA European Under-21 Championship, where he played two matches in the group stage. He was an unused substitute as his nation exited the competition after a 2–4 defeat to Germany in the semi-finals.

He recorded his debut in the latter competition on 19 September 2016, in a 2–0 victory against defending champions Astra Giurgiu. On 23 May 2017, Olaru scored his first league goal from the penalty spot in a 3–0 defeat of Concordia Chiajna. In early 2018, he signed a precontract with fellow Liga I side FCSB, but the move initially fell through after a transfer fee could not be agreed upon.

Olaru made his senior debut for Gaz Metan Mediaș on 29 August 2015, appearing in a second division 2–1 away win over UTA Arad. He amassed twelve games and scored two goals in that season, as his hometown club returned to the Liga I after just one year of absence.

Darius Dumitru Olaru (born 3 March 1998) is a Romanian professional footballer who plays for Liga I club FCSB as an attacking midfielder or a winger.