AC Milan have sacked Vincenzo Montella as manager and placed Gennaro Gattuso in charge of the first team.
The club are seventh in Serie A on 20 points, 18 behind leaders Napoli, after a run of only two league victories in their past nine games.
They drew 0-0 with Torino at home on Sunday and have lost six of their 14 top-flight matches this season.
Gattuso, a former AC Milan midfielder, steps up from managing the club's youth side.
The 39-year-old Italian played for Milan between 1999 and 2013, winning the Serie A title and the Champions League twice.
AC Milan, who have won the Italian title 18 times and are seven-time European champions, have not finished in the top three in Serie A since 2013.
They have spent £205m on new signings since Chinese businessman Li Yonghong took control in April last year.