Deco told Portuguese broadcasters SIC: "He (Mourinho) would come here and would impose his work style. What people [Barcelona fans] want is to win trophies."
However, Deco is confident the fans would welcome back the man who was part of the Barca set-up under Sir Bobby Robson and Louis van Gaal.
"Some polls here (Barcelona) show that people would be glad to have him (Mourinho)," said the Brazil-born Deco, who is expected to start on the bench against Real Madrid and made no secret of his desire for Mourinho to take over from Frank Rijkaard.
Deco said: "I would be happy because he is a great coach, a good friend with whom I had happy moments. If it happens I would be very happy."
