Valencia has sacked coach Marcelino García Toral after just three games of the season, hiring former Real Madrid and Barcelona player Albert Celades as his replacement.
Marcelino has been dismissed from his post at Mestalla due to conflicts with the club Singaporean owner Peter Lim over player transfers and sporting decisions.
The former Villarreal and Sevilla manager won the Copa del Rey with Los Che last season after beating FC Barcelona 2-1 in the final. In his two seasons with the club, Marcelino also led Valencia to fourth place finishes in the Spanish league and qualification for the Champions League.
The 54-year-old Spaniard leaves Valencia as one of the club's most successful and popular coaches.
Valencia sit 10th in the La Liga table after opening with a home draw against Real Sociedad, a defeat at Celta Vigo and a home victory against promoted Mallorca.
Former Spain U-21 manager Albert Celades has joined Valencia until June 2021. The 43-year-old Barça midfielder played with Spain's national team and ended his career with the New York Red Bulls in 2009.
Valencia travel to Camp Nou on Saturday to face Barcelona in LaLiga Santander as a repeat of last season's Copa del Rey final before opening their 2019/20 Champions League campaign against Europa League winners Chelsea at Stamford Bridge next Tuesday.