Tottenham boss Antonio Conte is remaining in Italy as he recovers from gallbladder surgery.
Conte had surgery at the beginning of February.
The Italian returned to coaching, but now he has to sit out again.
After defeat at AC Milan, Conte had a routine check-up and there have reportedly been complications.
Spurs announced this morning: "Following a routine post-operation check in Italy yesterday (Wednesday), Antonio Conte will remain at his family home to further and fully recover from his recent gallbladder surgery.
"Health is the most important consideration and everyone at the Club wishes him well.
"Cristian Stellini will assume First Team responsibility."