Barcelona's second-most important player isn't who you think – and finally deserves plaudits

If Barcelona are to overcome Paris Saint-Germain in their Champions League quarter-final encounter, and on an even bigger scale banish the memories of a first trophyless season in six years, then there will be several key factors helping them along the way.

Lionel Messi will be the obvious one. Then there's the showdown that took place in the Camp Nou dressing room to resolve differences between Luis Enrique and his players earlier in the campaign.

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