The Portuguese ace lived one of his greatest nights in UEFA Champions League history, but his reactions after the final whistle could get him in trouble.

If UEFA uses the same criteria they used a couple of weeks ago, then Cristiano Ronaldo could face some serious problems.

The Portuguese ace had a night to remember in the UEFA Champions League clash against Atlético, leading Juve in their come-from-behind win against Los Colchoneros. But what happened after the final whistle could see UEFA handing him a hefty fine.

Cristiano vented the frustration he carried from the first leg, where he was abused by Atlético fans who accused him of being a "rapist", due to the ongoing investigation being conducted by the Las Vegas Police Department. Added to that, Spanish fans remembered him of his problems with the IRS, which forced CR7 to pay a $17M fine.

Last, but not least, Diego Simeone's nasty gesture while celebrating the second goal in the first leg did not go unnoticed by the footballer, who decided to mimick it after the final whistle. To top it all, he labeled Atlético fans as "sons of b*****s" while celebrating, as footage by Movistar+ shows.

Simeone was forced to pay over $20,000 for his gesture during the first leg. Will UEFA hand Cristiano Ronaldo a similar sanction?