The following year, he joined the junior academy of Spanish club Real Madrid, where he won a youth league title.

[8] He recorded his Ligue 1 debut on 20 September that year, entering the field in the 65th minute of a 3–0 home defeat to Paris Saint-Germain, and his first European game on 5 November, in a 3–2 UEFA Europa League away loss to Slavia Prague.

[9] On 31 January 2024, Daniliuc joined Austrian Bundesliga club Red Bull Salzburg on loan for the remainder of the season.

[15][16] On 27 March 2023, Daniliuc debuted for the Austrian senior squad during a UEFA Euro 2024 qualifying match against Estonia.

[17] Daniliuc was born in Vienna, Austria, to Romanian parents from Suceava who fled their home country before the fall of Communism.