Leeds United fans were left fearing the worst on Wednesday afternoon after Marcelo Bielsa called an impromptu press conference.The revered Argentine coach, who has led Leeds to pole position in the Championship after 27 matches played of the 2018-19 campaign, was reportedly on the verge of resigning according to certain publications.However, the same supporters were left breathing a huge sigh of relief when Bielsa got the laptop out and began a lengthy Powerpoint presentation on Derby County.Bielsa, who finds himself at the centre of the ‘Spygate’ scandal, came out and admitted that Leeds have spied on all of their opponents this season - not just Derby."What I have done is not illegal. We can discuss it, it's not seen as a good thing, but it's not a violation of the law,” he told a group of assembled journalists. "I know that not everything that is legal is right to do."However, Bielsa went on to show the extraordinary amount of work that he and his staff put in before each fixture.For example, they watched all 51 of Derby’s fixtures from last season, spending four hours analysing each match.Bielsa, known as ‘El Loco’ (The Crazy One) in Argentina, is famous for being a true one-off - and following today’s events, English football fans now know exactly what he’s like. A true football obsessive who leaves no stone unturned when it comes to preparation.The 63-year-old analyses every opposition player to such an extent that by the time match-day comes around, he knows everything about them.Take Harry Wilson, for example.The 21-year-old, who is currently on loan at Derby from Liverpool, didn’t even play in the match against Leeds at Elland Road last week.But Bielsa still knew everything about the Wales international.On this slide of the Powerpoint presentation, we can see the various positions Wilson has been used in by Frank Lampard this season, and the minutes he’s played in each position.

Bielsa - per Phil Hay of the Yorkshire Evening Post - then showed video footage showing Wilson always raises both hands when taking corners.

"You cannot analyse football if you do not know who each player is,” Bielsa added.

Bielsa probably now knows more about Wilson than Lampard and Jurgen Klopp put together.

The guy is a true one off - and no matter how you feel about ‘Spygate’, English football is far more entertaining for his presence.