Mauricio Pochettino's entertaining Tottenham and Southampton sides became a thing of Premier League beauty. They epitomised his playing style, which was developed and refined in Argentina and the demands he makes with total buy-in from his players were clear.
Players such as Adam Lallana and Moussa Dembele, undoubtedly skilled midfielders, were taken to a new level under Pochettino through dedication, hard work and impressive coaching. Although the narrative is that the 51 year-old is less tactically skillful than Julian Nagelsmann or even Thomas Tuchel, he flipped from a back four into a back three in 2017 and maintained a title charge for a second season in a row.
Like many before him there was a struggle to assert much identity - at least his own identity - on Paris Saint-Germain. For a hard-working side to effectively carry Lionel Messi was always going to be a tough ask. Now it appears that he has the same challenge at Chelsea.