Aware that some Atletico fans are unhappy with Reyes' time at Real Madrid last season, Aguirre said: "Reyes will try to change the whistles into applause. He is a player who will be very good for us and will finally have the chance to play from the start in games. He will give us goals, applause and joy.
"The fans are free to express themselves. But Reyes is an intelligent boy, he's been at the top for three years and has come to help this club. The pressure from a section of the fans won't weigh him down."
Aguirre added: "In principle the market is closed for us. But if something comes up, we will move for it."