Palmeiras wonderkid Estevão will soon be a Chelsea player, but on Friday night, they were the enemy.
Colwill stayed on the floor for almost a minute and Estevao was perhaps lucky to avoid a yellow card as he escaped with only a stern word from the referee.
Estevao was seemingly also on the receiving end of some stern words from Chelsea left-back Marc Cucurella, who was seen shouting at his future team-mate in the aftermath.
The incident did not go unnoticed as dozens of Chelsea took to social media to react.
One wrote: 'Estevao needs to calm down. Almost injured Colwill there'.
Another comment read: 'That's one way to announce yourself to Chelsea, right in the back of Colwill from Estevao.'
A third fan wrote: 'Estevao left a late challenge on Colwill. Cucurella nearly slapped the boy but remembered he was now a teammate.'
Estevao committed three fouls in total during the opening 45 minutes — more than any other player on the pitch.
But it was also pointed out by another Chelsea fan on X (formerly Twitter) that the rough stuff involving Estevao was not entirely one-sided.
But Estevao did not appear to be intimidated, and he responded perfectly one minute into the second half by scoring a stunning goal past keeper Robert Sanchez from a narrow-angle.
Chelsea will now face Fluminense in the semi-finals on Tuesday.