#4 Leonardo Jardim

Despite all that Jardim has achieved already, the Portuguese coach still doesn't get enough credit. His reputation does not even come close to his achievements. By dethroning PSG last season, his Monaco side finally injected some excitement to Ligue 1 which had been reduced to a fight for the 2nd and 3rd spot in order to qualify for the Champions League.
Monaco were taken over by Russian Billionaire Dmitry Rybolovlev in 2011 and the club immediately stated their ambitions to be on top of Ligue 1 and made a few big money signings but Rybolovlev switched tracks the next season and reigned in spending and appointed Jardim to replace Ranieri who had led Monaco to the second spot.
Monaco finished third two seasons in a row under him before Jardim's young attacking side caught the imagination in Europe with a Champions League semi-final appearance apart from finally beating PSG to the League, earning Jardim the Ligue 1 Manager of the Year.
Despite his brilliant record, Jardim is not yet seen as an elite level coach but that is changing slowly as his Monaco side continue to impress in the domestic and European Competitions consistently.