Quoted from the Football Italia page, Tuesday, according to several reports, Calhanoglu was absent due to muscle fatigue, while Frattesi had a fever.
The two players were reportedly not included in the Inter Milan group that left for Norway and of course losing these two players is a loss for the Nerazzuri.
Calhanoglu had only just returned to action last weekend, coming on as a substitute against Juventus after a month-long absence.
Previously, the 32-year-old Turkish player had missed nine matches for Inter Milan due to injury.
