Gazzetta dello Sport says Galliani will address the players on Thursday after a disappointing Serie A campaign so far.
Meanwhile, Zlatan Ibrahimovic returned to training for the first time since admitting he was "tired of football" last week while away with the Sweden.
Observers reported Ibra smiled little and looked unenthusiastic.
However, coach Max Allegri insisted: "He has a stomach ache. Maybe we'll give him Maalox ..."