Aldo has seen enough of the champions this season to believe the Uruguayan can give them a sense of deja vu.
"Make no mistake, Alex Ferguson will be very, very wary of Suarez this weekend," he told liverpoolfc.tv.
"He knows his side have a lot of defensive flaws that can be exposed. They have been great going forward, fantastic to watch, but they are vulnerable.
"Even the likes of Basle and Norwich have shown that recently.
"If Suarez brings his top form, Liverpool will be in a great position. He ran United absolutely ragged when the sides last met back in March.
"He made all three goals, and gave the United defenders nightmares all afternoon. Dirk Kuyt got a hat-trick, but Suarez was the star man."