Paris Saint-Germain, Real Madrid and Manchester City are all reportedly interested in Miralem Pjanic, but he wants to stay at Juventus.
Massimiliano Allegri's management methods have impressed Miralem Pjanic, who turned down the chance to represent France.
Montenegro will have to play their next competitive fixture behind closed doors after UEFA rejected their appeal.
Miralem Pjanic addressed reports linking him with Ligue 1 champions Paris Saint-Germain.
Juventus appeared to be cruising to victory over Napoli before goalscorer Miralem Pjanic was sent off to complicate matters.
Miralem Pjanic opened the scoring but followed Alex Meret in receiving a red card as Juventus held out for a 2-1 win over Napoli.
Juventus struggled against Bologna on Sunday, but substitute Paulo Dybala secured the points and edged them closer to the Serie A title.
Massimiliano Allegri hopes Juventus use their next three Serie A games to prepare for a famous comeback against Atletico Madrid.
Miralem Pjanic, Federico Bernardeschi and Sami Khedira trained separately on Tuesday, but Emre Can is on the comeback trail.
Manchester United have enough quality to trouble Juventus at the Allianz Stadium, according to a wary Miralem Pjanic.