#3 Rene Girard (Montpellier)
A 3-time title winner during his playing days with Bordeaux in the early 80s, Rene Girard joined Montpellier in 2009 without much pedigree in club management.
The club had just been promoted from the 2nd division when Girard took the reigns and the club managed to finish 5th, thus qualifying for the Europa league. A subsequent 14th placed finish meant that a return to the second division looked imminent.
But in the 2011/12 season, against all odds, Montpellier managed to win the league title despite heavy investment by Paris Saint-Germain after being acquired by Qatari owners.
Montpellier was fired to the title by a certain Olivier Giroud whose 21 goals and 9 assists made the world sit back and take notice and he eventually joined Arsenal the following year. All this was achieved with a net spend of measly 2m