The reverse fixture earlier in the season was won 4 - 0 by Inter .
Inter found it tough to breakdown the resilient Frosinone defence , Perisic shooting just wide after 67 minutes , before Icardi struck .
The reverse fixture earlier in the season was won 4 - 0 by Inter but they found it tough to breakdown the resilient Frosinone defence , Perisic shooting just wide after 67 minutes , before Icardi struck .