Pep Guardiola is set to miss the next two Manchester City games after a "routine operation" to correct a persistent back injury.
City said their treble-winning manager had been suffering from "severe back pain for some time" and he flew out for surgery in Barcelona where he will remain to begin his recovery.
The Spaniard, who will remain in Barcelona while he recovers from the operation, is expected to miss City's matches at Sheffield United this Sunday and Fulham on September 2 at the Etihad Stadium, with assistant manager Juanma Lillo taking charge in his absence.
The club season then takes a two-week break for international matches before City return to Premier League action against West Ham United on September 16 – when Guardiola is expected to return – with the Champions League group stage kicking off the following week. "Pep Guardiola has today undergone a routine operation on a back problem," said the club in a statement. "The Manchester City boss has been suffering with severe back pain for some time, and flew out to Barcelona for emergency surgery performed by Dr Mireia Illueca.