Tactics
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Many pundits describe Zinedine Zidane as a mere inspirational presence not a genuinely good manager.
This date back to the 2016 Champions League final. During the build-up, Real Madrid players were asked one interesting question: What was different about Zidane? How is leadership standing out from the rest?
Everyone fulsomely answered were pointing out at two things, "intensity" and "feeling". No player said anything about his tactical approach, and that was because there wasn't any.
This is hard to explain.
If you can look at Real Madrid's performance - bar from the result- then it is clearly visible. Under Zidane, Real Madrid doesn't play with a tactical plan and are over-reliant on their forwards.
When the front three goes missing so does the whole team: something that has happened this season.