Manchester United cannot bring back Alexis Sanchez to ease their injury crisis because there is no recall clause, sources have told ESPN.
Mario Balotelli was sent off seven minutes after coming on at the weekend after insulting a referee.
Cristiano Ronaldo struck twice to continue his sensational scoring run and help move Juventus four points clear at the top of Serie A.
AS Roma returned to winning ways and moved into fourth place in Serie A with a 3-1 win at troubled Genoa on Sunday.
Inter Milan were held to a 1-1 draw by relegation-battling Lecce in Serie A on Sunday, dropping points for the second weekend in a row.
Ante Rebic broke his AC Milan duck by scoring two second-half goals including a stoppage-time winner to give them a thrilling 3-2 win over Udinese.
Fiorentina moved above Napoli in Serie A and consigned coach Gennaro Gattuso to a fourth defeat in five games with a 2-0 win at Stadio San Paolo.
Ciro Immobile scored a hat-trick as Lazio hammered Sampdoria 5-1 on Saturday to record an 11th consecutive Serie A win.
Ashley Young has completed a transfer from Manchester United to Serie A side Inter Milan.
Simone (Lazio) and Pippo Inzaghi (Benevento) are unbeaten in the league since November. Could the brothers win both Serie A and Serie B this season?
AC Milan boss Stefano Pioli believes the club have yet to see the "real" Zlatan Ibrahimovic after he made his return to the club.