It took four games, but once Ronaldo got on the score sheet against Sassuolo on Sunday, it was obvious that we were in for a good show.
It was, however, a spitting offence that saw him deservedly receive his marching orders and he can now expect there to be serious repercussions.
Cristiano Ronaldo broke his Juventus duck in his fourth game when his second-half brace gave them a 2-1 win over Sassuolo on Sunday.
"Then the other team gets back into the game, some players get irritated and that sort of thing happens".
Ronaldo netted his first goals for his new club Juventus this weekend, with the Old Lady maintaining their unbeaten start to the Serie A season.
Costa who had earlier been shown a yellow card in the 90th minute again was involved in the build-up to the visitor's consolation goal after Cristiano Ronaldo broke his Serie A goals drought with two goals.
"I'm happy. I'm working well and my teammates have helped me to adapt to this championship", he added. "I think he rushed a couple of chances today".
After the meeting, the former Real Madrid player told Sky Sports that "I am very happy, the game was very close". The second goal was brilliant.
And Allegri indicated he wants to move on from the incident, with Costa still in his plans for Wednesday's Champions League opener against Valencia.
His first goal for Juventus was probably the easiest of his career as he pounced on a mistake to grab the opener.
"I don't like the pressure that is put on him because if he plays tomorrow and doesn't do so well, he will be massacred (by the media)".