Olympiakos coach Michel heaped the pressure on Juventus after underlining the Italian giants` need for a home win in their Champions League Group A clash in Turin on Tuesday.
Juve`s last-16 chances are hanging in the balance after dropping to third in the group, three points adrift of Atletico Madrid and Olympiakos, following respective away defeats to the pair in the past month.
With a tricky away trip to Swedish champions Malmo and a home clash against Atletico still to come, the Serie A champions realistically need a win, preferably with a two-goal cushion, against the Greeks if they are to keep their knockout phase hopes alive.
Michel said: "Juventus have a good home record but that`s not something that concerns us.
"For them a win is fundamental, for us it`s not. We`ve already beaten both Atletico and Juventus, and that shows how much potential we have."
Olympiakos`s 1-0 win a fortnight ago was down to Pajtim Kasami`s clinical 36th-minute finish, although much of the credit after the game went to Spanish goalkeeper Roberto for repelling a second-half onslaught from Juventus.
Michel added: "In Athens we deserved the win. We`re very proud to have beaten such a big side as Juventus and we`re looking for a repeat."
The Italians` failure to hit the net in Greece could prove their downfall, and help block their path out of the group stages for the second successive season.
Juve last made it into the knockout phase in 2013 when former coach Antonio Conte led the `Old Lady` to the quarter-finals where they fell to eventual winners Bayern Munich.
Allegri played down talk of Juventus suffering a Champions League complex, but he stressed the need for a win, preferably with a two-goal cushion to boost Juve`s qualification chances.
"I`ve heard talk of us having some kind of complex at international level, but I don`t agree," Allegri said.
"We`ve had some solid games, it`s just unfortunate that after away trips to Atletico and Athens we`ve found ourselves sitting on three points.
"Tomorrow will be an important test against a team that plays good football. It will be crucial for our group qualification chances.
"Ideally, we have to win by two clear goals and that won`t be easy."
Allegri said earlier he expected Olympiakos to "have the same approach as they did in Athens, but we have to put together an altogether different performance".
He added: "In Greece we missed a lot of opportunities. Now we have to play with more intensity but without hurrying things."
Michel`s side failed to find the net in a scoreless draw against 10-man Asteras Tripolis at the weekend, when Andrea Pirlo and Alvaro Morata scored for the Serie A leaders in a 2-0 win away to Empoli.
But Michel added: "In our last league game we didn`t hit the net, but that will come. It`s my job to make sure my players find a way past opposition defences."