match against Manchester United next month.
Mario Mandzukic and Sami Khedira had already missed glaring opportunities before Ronaldo's dismissal and, after a shaky few minutes following the red card, Juventus got back into its stride and took the lead on the stroke of halftime.
"He was upset and he needs time to calm down", Allegri said.
The 33-year-old directly contributed to half of Real Madrid's Champions League goals between 2009-10 and 2017-18, coming top of the goalscorer charts in each of the last six seasons.
Parejo stepped up but Wojciech Szczesny saved his spot-kick to sum up the Spanish side's frustrating evening.
"We proved to be a very united team", he said.
Who do you think will make it to the Champions League final? Its next Champions League match is at home against Young Boys, which Massimiliano Allegri's squad should have no trouble handling in Turin.
But English champions Manchester City struggled, with Pep Guardiola watching from the stands after a touchline ban, and were beaten 2-1 by French side Lyon at the Etihad Stadium after an error-strewn display.
The introduction of Sergio Aguero as a substitute revitalised City after the break, and Bernardo Silva turned in Leroy Sane's cutback with 23 minutes still to play.
"It's more natural than what you are suggesting among professionals", he said. Never write off Juventus Juventus have won Serie A seven years in a row and they used all their experience to silence the raucous Valencia fans and close out the win.
A three-goal win against Roma at the Santiago Bernabeu gave three-time reigning European champions Madrid three Group G points in their first game in the competition under new head coach Julen Lopetegui.
Julen Lopetegui's team will face CSKA Moscow away in their next group-stage match on October 2, while Roma host Viktoria Plzen on the same day.