Kevin De Bruyne was substituted at half-time after sustaining an injury during Napoli’s away match against Juventus in the 10th round of the Italian championship.
Medical examinations found that the Napoli midfielder had suffered a ligament strain, according to journalists from Sky Sport Italia. De Bruyne is expected to undergo further tests shortly, with the results set to determine how long he will be unavailable.
Napoli were beaten 2-0 by Juventus in Turin.
De Bruyne has made 10 appearances in Serie A this season, scoring four goals and providing one assist.