Albert Celades admitted he faces a complicated situation at "a difficult club" after being appointed head coach of Valencia just hours after the sacking of Marcelino.
The decision to dismiss Marcelino came as a shock to supporters still celebrating their side's Copa del Rey triumph and their fourth-place finish in LaLiga last season, which saw them qualify for the Champions League.
Former Spain Under-21 and Real Madrid assistant coach Celades has no experience taking charge of a first team at club level and in a news conference he said he had travelled to Singapore to meet with Valencia owner Peter Lim before Marcelino's departure was announced.
However, he insisted he would aim to build on the foundations laid by Marcelino, saying: "Regardless of the situation, Valencia is always a difficult club.
"It is a great club, a giant, and we will try to contribute in the best way. It has all been very fast.
"We are aware of the work that Marcelino has done during these two seasons. He has done very good things. We want to continue feeding that good work."
Celades moved to quash fears that his arrival might reverse the progress Valencia have made under Marcelino, who endeared himself to supporters during a successful two-year spell at Mestalla.
Valencia finished 12th in LaLiga in 2016-17, but Marcelino's arrival in July 2017 preceded back-to-back fourth-place finishes.
Celades, whose first game in charge sees them visit champions Barcelona on Saturday, said: "This team has many good things that have helped it to achieve its goals. We are not going to break what is there and think that everything is wrong.
"We have a lot of respect for and a very good opinion of the previous coach. We will try to encourage good things to keep them happening. Little by little, we will be adding new things.
"Here there is always pressure. I have been hired to do a job and I will try to do it in the best possible way."