Tottenham go into the second leg with a slight lead thanks to their two away goals. But Allegri has suggested the tie is far from over.
"We were all aware that we are in the knockout stages, we played against a physical and technical side. We will have to be very good in London to go through," he said. "Juventus has never been favourite in the last 16, so we had 50 per cent possibilities before the match and 50 per cent after."
Gonzalo Higuain missed a penalty to put Juventus 3-1 up on the stroke of half time, and Christian Eriksen made him pay in the second half, sending a free kick from the edge of the box under the wall to tie the game.
"Football gives and it takes from you. We shouldn’t be depressed. If somebody thought Juventus would win 4-0 then that was never in our thinking. We have to be respectful. We are going to London with a tie and we will play a final and they will probably be under more pressure than us," Allegri added.