The Chelsea winger was nominated for the EA Sports Player of the Month award after two goals and two assists in his last three Premier League matches, form that Guardiola saw many times he coached him at the Camp Nou.
"I hope [Pedro] doesn’t perform well tomorrow," he told mancity.com. "I have to thank him, he made me a better manager. Near the box he's a killer."
Chelsea head coach Antonio Conte says he must check the fitness of one or two of his players ahead of the 12.30pm GMT kick-off.