Juventus midfielder Claudio Marchisio believes the Turin club have a strong enough squad and do not need to add reinforcements during the winter transfer window. Juve and AC Milan have both been linked with a move for Manchester City forward Carlos Tevez next month, but Marchisio reckons i Bianconeri are already a force to be reckoned with. \"With regards to the transfer market, the club will evaluate the situation,\" he said to Gazzetta dello Sport. \"But I believe we are already competitive and we are a great team. Of course, if the club decides to make a move in the market it will be for the good of the side.\" Juventus, who are unbeaten in Serie A, go into Sunday\'s game against Novara on the back of a 1-1 draw at Roma. The result left Juve top of the standings, level on 30 points with Udinese. \"The important thing is that we are first and we hope to stay in top spot for as long as possible,\" Marchisio added. Udinese have won their last three league games but face a difficult task at the Stadio Olimpico when they host a buoyant Lazio on Sunday. The Roman club, who qualified for the UEFA Europa League round of 32 this week, are on a two-game winning streak and head into the weekend two points off the summit. Milan are third, level on 28 points with Lazio, and host Siena on Saturday on the back of a 2-2 draw at Bologna. Roma will be bolstered by the return of defender Juan, midfielder Gago and striker Bojan for Sunday\'s trip to Napoli. All three players missed Monday\'s 1-1 draw against Juve through suspension. Inter Milan visit Cesena looking to continue their climb in the standings. I Nerazzurri won 1-0 at Genoa on Tuesday to clinch their fourth win in five league games. The result allowed Claudio Ranieri\'s side to move into sixth, ten points behind Juventus. Genoa take on Bologna on Sunday hoping to bounce back from Tuesday\'s defeat to Inter - their first home setback this season. Parma are hoping to recover their top scorer, Sebastian Giovinco, in time for Sunday\'s game against bottom-placed Lecce. Giovinco is doubtful after sustaining a muscular injury during last weekend\'s goalless draw at Cagliari. Fiorentina will have striker Stevan Jovetic available for Saturday\'s clash with Atalanta. Jovetic missed last weekend\'s 2-0 defeat at Inter with a hip problem. Palermo visit Catania on Sunday hoping to end a dismal week on a positive note. Devis Mangia\'s side saw their unbeaten run at home end in a 1-0 defeat to Cesena and were then eliminated from the Coppa Italia on penalties by Siena in midweek. Chievo have lost just once at home this season and host Cagliari on Saturday.