Portland Timbers defender Bill Tuiloma has spoken of his time at Marseille with Marcelo Bielsa.
Bielsa has been a revelation with Leeds United in the Championship this season.
Tuiloma told So Foot: "He's a unique trainer, the one who impressed me the most.
"With Bielsa, from the moment you work, regardless of your level or your age, you have your chance.
"He's a coach who made me stronger and gave me a lot of confidence."