It was Guardiola's final appearance as coach at the Nou Camp.
"Weâ€™re in an era where BarÃ§a have learned to win and lose, where we also pay homage to our heroes," said Rosell.
"Itâ€™s important that our heroes can leave through the front door. Weâ€™ve matured as a Club and as supporters.
"The Camp Nou clamored for Guardiola. Pep we love you. We canâ€™t say anything else. It was fantastic."