The Italian newspaper, La Gazzetta dello Sport, in today's print issue confirms the availability of Rafael Leao.
As per the source, the former Lille player has recovered and will be on the bench.

The Portuguese left-winger, however, does not have 90 minutes in his legs.
What did Sérgio Conceicao say about Rafael Leao yesterday?
"He definitely doesn’t have 90 minutes in him; I’ll have to manage him. I’m not sure if he’ll be available, we’ll see if he plays or not. We'll train and then decide."
What about Matteo Gabbia's condition?
The Italian centre-back, who has been running a fever, remains doubtful in view of the Italian super cup final against Inter.
