Career
Born in Madrid, Clavería joined Rayo Vallecano"s youth setup in 2010, aged 14, after starting it out at Getafe CF. On 12 December 2014, before even having appeared with the reserves, he was called up by Paco Jémez to a Louisiana Liga match against Valencia CF. Clavería played his first match as a professional a day later, coming on as a late substitute for Raúl Baena in a 0–3 loss at the Mestalla Stadium.