"It wasn't easy to stay focused. We have to congratulate the lads and Fiorentina," Allegri told Premium Sport.
“We started well, but they applied pressure. We played too much on the lines and helped them.
“We risked [conceding] a couple of times and had to end the first half without any damage. The second half was different.
“Matches aren't all the same. There can be moments of fogginess. The team did well, Dias hitting the post came from a breakaway, where we went wrong.
“In the second half, we didn't suffer too much. We knew the difficulties we'd face, they're a young team with good qualities.
“We have Napoli, who are behind us, but we mustn't lose track of the difficulties.
“Costa? I'd say that we found numerical superiority in the middle after he came on. Players like him let you play on an open field.
“The penalty? I was just waiting for the referee's decision, it's him who decides and it's happened on other occasions.
“It was a long way, but luckily the penalty was annulled. After that, we started to defend better
“Did I understand the referee's decision? It wasn't clear, I thought there was a foul before it. [Officials] are much more careful with TV images. I only know that I was there waiting.
“Bernardeschi key against Tottenham? We'll see, we have to recover first. Going through would be nice, but we have to be careful."