Felix Magath has accused predecessor Rene Meulensteen of "destabilising" Fulham as he vies to restore clarity at Craven Cottage.
Magath was appointed by owner Shahid Khan on Friday following the dismissal of Meulensteen, with Fulham rock-bottom in the Premier League, four points adrift of safety.
With just 12 games remaining, the former Bayern Munich coach faces a stern test if he is to save the West London club.
Analysing the recent fortunes of Fulham, the German believes Meulensteen's abrupt change in tactics led to their downfall.
"My predecessor let the team play very attacking football for four games," he told The Sun.
"Then he suddenly rearranged the defence, and that destabilised the whole team."
Magath insists his first job is to reform systems at Craven Cottage as he aims to swiftly transform Fulham's campaign.
The 60-year-old added: "My most important task is to bring in a clear structure."
Meulensteen spent just 75 days at the Craven Cottage helm, having taken over from fellow Dutchman Martin Jol, who was sacked in December.
Magath takes charge for the first time on Saturday as Fulham travel to The Hawthorns to face fellow strugglers West Bromwich Albion.