I have noticed a trend that now coaches who have ever worked with Guardiola are highly valued (Kompany - Bayern, Maresca - Chelsea), and if the first one is quite young and has not yet proven his skills with impressive results, then Maresca was able to win the Championship, which looks very earnestly. He is already discussing summer transfers with the management, for now it is reported that he wants to buy a goalkeeper and a defender.
Pep Guardiola has dominated football so much because of his style of football and the truth is that the young managers who learnt from him has every tendency of succeeding in football as managers so that's why they're getting job offers from the best teams in the world. For instance, Mikel Arteta learnt from Guardiola when he was his assistant manager at Manchester United and after few years, Arsenal signed him to come and improve their performances and also make the club competitive again. Arteta arrived Arsenal as a young manager who's yet to manage a club's top team in his managerial career but because he learnt from Guardiola, he's been Manchester City's strongest contender in the league for the past two seasons.
Bayer Leverkusen manager Xabi Alonso learnt from Guardiola though for not too long, recently signed Chelsea manager did work with him in the past and Bayern Munich's latest manager Vincent Kompany also learnt from him and it's believed that they'll all become future great managers