Ace forward, Cristiano Ronaldo is a doubt for Juventus’ Serie A clash at Napoli on Sunday after he picked up an ankle injury during the weekend’s 1-0 win at Bologna.

His check ups have been scheduled for today and tomorrow following a knock to his left ankle during the game against Bologna. Ronaldo trained separately from his team mates today and the club says he will need medical checks as far as the problem os concerned.

Ronaldo has scored a total of 19 goals in 24 starts in Italy’s top flight since he moved from Real Madrid last July.

The Serie A leaders face Napoli at the San Paolo on Sunday knowing that a win will move them 16 points clear at the top of the table then face Udinese at home on March 8, before the second leg of the Champions League last-16 tie with Atletico Madrid four days later.