Albertini played for both clubs.
"It will be a tough match," the former Diavolo midfielder told Milan News.
"Diego Simeone's side plays good football and the stadium will be very hot.
"As always, you think about the history of a club and that's why we tend to underestimate Atletico, but, at the moment, they are one of the most in-form in Europe.
"However, as always, it depends on how the clubs are doing at the time. Real Madrid could have been a high level opponent, especially for their tradition, but Atletico are not that far behind."
For breaking stories and all the great banter like us on Facebook: facebook.com/tribalfootball