#1 Marcelo Bielsa
Bielsa is a manager who redefined football tactics and breathed fresh air into modern football. The iconic Argentine has very little to show for his genius philosophy but his legacy will remain in the form of his disciples – Pochettino, Sampaoli, and Guardiola.
His 3-3-3-1 formation was a revelation in modern football. Now unemployed, after leaving Lazio just two days after taking charge of the club, he will be remembered as a controversial but inspirational individual.
There are many managers in the world who have achieved great success over the years but very few of them have truly brought in a new style of management, a new system. Johan Cruyff will be forever remembered for what he did to football not just on the pitch but also off the pitch. He ushered in a new era of tactics and gameplay.
Bielsa’s contribution to football is also similar. He had the guts to try something new and achieved immense success with it. While he did not succeed to a great extent in terms of silverware, his legacy will be carried forward by his mentees Guardiola, Pochettino, and Sampaoli.