In a lengthy post on Facebook, Magath claimed that some members of the Fulham squad turned to "malicious gossip" after being left out of the side.
Magath wrote: "It is very important in my profession to be judged objectively, as I can imagine all of you would also expect. I have no problem with constructive criticism, but malicious gossip just goes too far in my opinion.
"And I will most certainly defend myself against a defamation of character, which is put out to damage my reputation. It seems to me, that often players who are not performing on the pitch and are not in the spotlight, will make such ridiculous accusations.
Kit Symons has taken over as caretaker boss for the Cottagers.