Pep Guardiola tells Manchester United why Man City have been more successful since Sir Alex Ferguson left

Pep Guardiola says Manchester United's high turnover of players and managers is a major factor behind their struggles in the nine years since Sir Alex Ferguson left the club.

The Manchester City boss is in his seventh season at the Etihad, and has faced four United managers in that time. While United have struggled to define their identity in the year after Ferguson, City have consistently built their own and have asserted their dominance over the rest of the Premier League as a result.

Erik ten Hag, who worked as a coach at Bayern Munich when Guardiola was manager there, is the latest manager to try and change United's fortunes. And Guardiola feels that he can be a success if the hierarchy at Old Trafford give him time to implement his ideas.

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"I have a lot of admiration for Erik. We know each other a little bit because we worked a year in Munich," Guardiola said. "We didn't have a close relation. What he's done is incredible work in Holland. Ajax in the last years were an example across Europe and United trust and build a team, give ideas and years with him. Welcome. I cannot say anything else.

"He knows, I know, it depends on results. I'm still here because we won in the past, Erik knows it, all the managers before Erik know it. If you win in big clubs you have time, if you don't you are in trouble. The beginning of the season was difficult with Brighton and Brentford defeats but after they come back with incredible energy in the games and got results. This is the best way because results give you time to build what you want. If United decide on Erik, it is because they believe he is the man."

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