There were many bright spots despite a 0-3 Heroic Hammering at the hands of European Champions, Real Madrid.
None more so that the captain, Callum McGregor.
He led the way in most of the key defensive AND ball progression metrics.
In summary:

Of course, Real Madrid were not going man to man as many SPFL sides do.
Against The Rangers in the previous match, he completed only 26 passes.
Real Madrid would not deign to man mark any opponent I would suggest, and who can blame them. Such chores would be beneath the likes of Modric and Kroos who put their efforts into destroying the opponent by passing them to death.
So, he was allowed to play but looked worthy of being on the field with such company. And let’s not forget his outside the box striker that rattled the goal frame.
It was noticeable that Celtic’s most experienced international players all stood up well in this match – Hart, Juranovic, McGregor and Mooy when he came on.
This experience is not to be underestimated and McGregor at 29 is showing true leadership by example based on this stellar performance.