"The truth is that I was very surprised [to hear Guardiola's comments]," Cardoner told Mundo Deportivo.
"I left a meeting yesterday afternoon and heard some of it on the radio and when was informed further in seeing Pep's statements and I have not understood.
"I imagine there will be some explanation behind these statements because the relationship between us, and I speak not only for myself but for the president [Sandro Rossell] too, has always been cordial. Maybe Pep should talk to the president to reduce these differences."
Guardiola won 14 trophies in four years at Camp Nou.