20 Trophies in 10 Years! Guardiola's City Era Ends. Flick: He's the Best Coach in the World

Under Guardiola's leadership, the "Citizens" have amassed 20 trophies, highlighted by a Champions League triumph and six Premier League titles. The coach himself cited concerns about a lack of energy as his reason for ending his tenure at City.

"The impact he's had on every league he's coached in is simply unique and among the very best. He came to England and broke every record. It's truly amazing," England's national team coach Thomas Tuchel was quoted as saying by DPA.

Under the Spanish tactician, Manchester City established itself among Europe's elite, consistently competing for top honors on all fronts.

"He's the best coach in the world. Pep is incredible. Every year he shows that even when things aren't going well, he knows how to handle the situation and find solutions. I wish him a good rest, but I believe he will return," commented Hansi Flick, the current manager of Spanish club Barcelona.

Guardiola's final opponent on the City bench will be newly crowned Europa League winners Aston Villa. "It's an honor and a pleasure for me, because he is the best coach in the world. That's clear. He's a great inspiration to others," stated "Villans" boss Unai Emery.