Former Barcelona president Joan Laporta can't believe Pep Guardiola is now working for Bayern Munich.

Laporta is ready to challenge Sandro Rosell at the next Barca presidential elections.

"It's surprising, or ridiculous, to wish to modify a model of success, and seem to be obsessed with destroying everything we build," the 50-year-old said.

"They made it possible for Guardiola to leave, and we have had no appreciation. Conversely, they have gone on to destroy our image."