Perea, 20, grabbed the winner in stoppage time for a virtually second string Lazio side.

He had opened the score only for Frenchman Jonathan Biabiany to equalise for the visitors.

Lazio, who have won the trophy five times in the past 16 seasons, will play either Napoli or Atalanta -- who play on Wednesday -- in the last eight.

Also on Wednesday, Mauro Tassotti will take charge of AC Milan's game against Second Division La Spezia, although not even victory will boost his chances of having the job on a permament basis.

Former Dutch international midfielder Clarence Seedorff announced earlier on Tuesday he had been hired as the replacement for Massimiliano Allegri, who was fired on Monday.