The Elland Road dressing room is full of examples, but nobody typifies the effect that the Argentine has had on the Whites better than Mateusz Klich.
The Poland international has been a virtual ever-present for Leeds since Bielsa took over in the dugout, and the player has been quick to acknowledge the impact his manager has had on him.
“I read the words of coach Bielsa in which he complimented me, but this is not the first time,” the 30-year-old said on Sunday.
“It is nice to listen to such words, but in private conversations there are not only compliments. I know I have to keep my feet on the ground and work with all my strength.
“I have proved a lot to myself for sure. My adventure with foreign football started badly for me. I was lost in Germany, I don’t think I was ready to play in the Bundesliga, but I wanted to stay overseas, wandered around clubs, and finally ended up in Leeds, which turned out to be my place on earth.
“I found a coach who trusted me and helped me.
“Thanks to this, I can play in the best league in the world, where not everyone is able to meet the requirements. Apparently, I needed time to see football.”
We’ve gathered the best of today's Premier League transfer speculation below...

7. Liverpool set for Minamino talks
Liverpool will hold crunch talks with Takumi Minamino following international duty with the Japan international open to a return to Southampton next term. (Hampshire Live) (Photo by Koji Watanabe/Getty Images) Photo: Koji Watanabe

8. Kenny claims Meslier could be tempted to leave
Leeds United goalkeeper Illan Meslier will “definitely be tempted” if a glamorous club comes calling this summer. (Football Insider) (Photo by Michael Regan/Getty Images) Photo: Michael Regan

9. Alioski edging closer to Leeds stay
Ezgjan Alioski is edging closer to staying at Leeds United this summer, with an offer of a new contract already tabled. (Karar) (Photo by Stu Forster/Getty Images) Photo: Stu Forster

