Juventus head coach Maurizio Sarri is being treated for pneumonia.
The former Chelsea boss did not take training on Monday but did go to their training centre.
Sarri was battling what he thought was flu last week but further tests on Monday afternoon led to a diagnosis of pneumonia.
“Maurizio Sarri, after having observed rest over the weekend, was at the JTC Continassa [Juventus Training Centre] today where he co-ordinated the work of his staff,” read a statement from Juventus.
“Unfortunately, he could not conduct the training on the field due to the persistence of his flu, which struck him over the course of last week.
“In the late afternoon, he underwent further tests that confirmed he has pneumonia, for which specific therapy has been prescribed.
“The coach has authorized the club to communicate his state of health.”
Juventus play away to Parma in their opening game of the Serie A season on Saturday but is unclear whether Sarri will be well enough to take his place in the dugout.