"We don't expect Chelsea to not come out and attack us – they are not a side who sit back and wait to hit you on the counter-attack," he said.
"They have great attackers and I cannot see them playing any other way."
However, Alessio is confident that Juventus will defeat the reigning European champions in Turin.
"We know, without beating about the bush, that it's all or nothing and we want to go through," he said. "We will take to the field with our customary determination and will to win.
"Of course, we could take our chances better. We know how good their goalkeeper (Petr Cech) is, but we have to create lots of chances.
"They are the European champions, have strengthened with three or four good players, so they need to be respected as a team. At the same time, we know how strong we are and we will be playing them on an equal footing."
Juventus are currently third in Group E with six points from four matches, a point behind second-placed Chelsea.