Roma have confirmed that Fabio Borini is out of action for five weeks and Juan for two weeks after injuries sustained at the weekend.
Earlier reports had suggested that the Giallorossi would be without Borini for as long as two months after he fell awkwardly against Milan on Saturday night.
Tests at the club's training ground have now confirmed that Luis Enrique will be without the 20-year-old for at least five weeks due to a thigh strain in his right leg.
Meanwhile, Juan has also been ruled out for a fortnight after tests confirmed the centre-back picked up a similar, less severe thigh injury against the Rossoneri.
Similarly, David Pizarro suffered a sprained knee in the final stages of Saturday evening's match and will undergo a timetable of physiotherapy over the next few days to recover.