According to L'Équipe, Guardiola is exhausted after leaving Manchester City and will take time to rest and recover.

Guardiola has already started resting, but he has not completely separated himself from football. He fulfilled his promise and enjoyed a genuine holiday.
Over the past 13 years, Guardiola has spent every summer preparing his teams, first coaching Bayern Munich and then Manchester City, with particular focus on the next Champions League campaign. His Bayern Munich period lasted from 2013 to 2016, while his Manchester City period lasted from 2016 to 2026.
In the past 18 Champions League editions, Guardiola has missed only one, the 2012-13 season. At that time, he was in a sabbatical period he had arranged for himself after leaving Barcelona and before taking charge of Bayern Munich.