Atletico lost 0-1 at home against Real Zaragoza on Sunday.
Cerezo said: “We had chances, but we have not converted them and we ended up paying for it. This team has people of quality, players, the majority internationals with their respective countries, it is a group built to win games very well.
“Three points have been lost that later could be important.
“Signings? At this moment it’s just talk: if there is something to sign, we will sign and, if not, there will not be any signings.”