Napoli midfielder Fabian Ruiz is a doubt for Napoli's' return to Serie A action after the international break, after having to withdraw from the Spain squad with swine flu.
Ruiz was awarded his first call up to the Spanish squad for this week's international fixtures, despite missing his club's league clash with Udinese last weekend through illness.
His condition failed to improve though, leading to the 22 year old pulling out of the squad on Monday evening and being admitted to hospital.
Although Ruiz was discharged from hospital on Thursday, Italian newspaper Il Mattino (via Football Italia) have reported that breathing problems and a fever were caused by a bout of the H1N1 virus.