Bayern Munich technical director Michael Reschke revealed that Guardila wanted Thomas Tuchel to become Bayern Munich's new coach.
Tuchel is Borussia Dortmund's current coach and has a deep relationship with the Spaniard.
Rschke told '11 Freunde' that Guardiola told him:
"Thomas has to become my successor at Bayern.
"I had a trusting relationship with Thomas Tuchel, and knew that he admired Pep's work.
"Pep, on the other hand, was impressed with Mainz's displays. He often talked to me about Thomas".