Guardiola stood soaked and stunned on the sideline as he witnessed a collapse on a scale he has rarely witnessed in his managerial career, let alone from his all-conquering Manchester City side.
City, knowing defeat would leave them on the brink in the Champions League, were fortunate to survive a first-half assault from PSG that saw Joao Neves head wide of an open goal, Josko Gvardiol clear off the line from Fabio Ruiz, while Vitinha also had a goal ruled out for offside.
Ruben Dias was removed at half-time after a first 45 minutes of toil, and suddenly the clouds looked to have cleared for City with those two goals.
Instead, when the old City would have finished the job, this latest version were run ragged by a vibrant PSG, who actually did not deserve to be behind, let alone two goals adrift.
City were all at sea as PSG went up the gears, the final score of 4-2 not reflecting the fierce going-over they were given as the tables were turned on them.
-Guardiola’s team looked old and laboured, devoid of pace and highly vulnerable on a sobering night that illustrated the scale of the rebuilding job Guardiola faces.
He has already started, confirming before the game that new young defensive duo, Abdukodir Khusanov from Lens and Vitor Reis from Palmeiras, are ready to be thrown into Premier League action.
On the grim evidence of a chilling night in Paris, they may get their chance sooner than they expected.
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