Zlatan Ibrahimovic returned to Milan's Serie A starting line-up with both goals in a 2-0 win at Cagliari that restored their three-point lead over Inter at the summit.

Antonio Conte's side pulled level with the Rossoneri thanks to their impressive victory over champions Juventus in Sunday's Derby d'Italia.

But Ibrahimovic is inspiring Milan's title bid with a prolific fervour and marked his first league start since November in style.

A seventh-minute penalty and a crisp half-volley early in the second period took the 39-year-old's tally to a remarkable 12 goals in just eight Serie A appearances this term.

Milan finished with 10 men as substitute Alexis Saelemaekers ludicrously collected two bookings within eight minutes of his 66th-minute introduction but fourth-bottom Cagliari could not avert a fifth straight Serie A loss.

Stefano Pioli confirmed Milan will consider adding further to their squad in January amid speculation Mario Mandzukic is set to join the club.

Mandzukic – who previously played in Serie A with Juventus – is a free agent after terminating his contract with Al-Duhail by mutual consent in July.

The Rossoneri are reportedly going to sign the Croatian striker on an 18-month deal, boosting their forward options as they look to maintain their push to win the league for the first time in a decade.

Pioli was not willing to discuss individual names at his pre-match news conference ahead of Monday's trip to Cagliari but did admit the club are ready to act if the right player becomes available.

"I don't want to and cannot comment on players that I don't have," he told the media. "I have a lot of confidence in the club and the management team. I leave that task to them.

"We know that if there is the possibility of strengthening the team, we will do it. We will be ready in January if there is the possibility of improving this group." 

Milan have already made one signing in the mid-season transfer window, midfielder Soualiho Meite arriving on loan from Torino.

"Meite makes a department that already had good solidity even more competitive," Pioli said of the new recruit.

"I really liked the move. We have combined quality and quantity. I also liked how he spoke, saying he was ambitious. To join our group, you have to be like that."

The Serie A leaders head to Cagliari without Hakan Calhanoglu and Theo Hernandez, both players currently isolating after testing positive for coronavirus.

Pioli admits it is a blow to be without the influential duo – they are also set to miss next Saturday's home fixture with Atalanta – but is confident he has the quality within his squad to cope with such situations during the course of the season.

"They are important absences, but this season is like that," the Milan boss said. "There are critical issues that can come at any moment, so we must always be prepared and attentive.

"The quality of the players that I will have available tomorrow will certainly make us have a good match.

"We are prepared, that's why I expect the players to always be ready. We can all be decisive and help the team."

Milan have announced Hakan Calhanoglu and Theo Hernandez have tested positive for COVID-19.

The two cases were discovered following swab tests carried out on Saturday, with the club immediately informing the health authorities upon learning the results.

Both players are asymptomatic and the rest of the squad tested negative, Milan confirmed in a statement released on Sunday.

Calhanoglu and Hernandez are now isolating at home, leaving Milan without the duo for some key fixtures coming up in January.

The Serie A leaders - who have lost just once in league action this season so far - visit Cagliari on Monday, then host Atalanta at San Siro next Saturday.

There is also a Coppa Italia quarter-final clash with rivals Inter looming on the horizon, that tie due to be played on January 25. 

Zlatan Ibrahimovic is ready to go through the gears as he attempts to steer Milan to their first Scudetto in a decade.

Ten goals in seven games from Ibrahimovic, at a rate of one every 53.4 minutes, has been a vital spur in the first half of the season that has taken the Rossoneri to the Serie A summit.

"Today I feel like a leader. I drive, the team follows me," the 39-year-old striker told Corriere dello Sport.

Fit again after a seven-week injury lay-off, Milan head coach Stefano Pioli will hope Ibrahimovic can resume leading the attacking line with his familiar panache as the season nears its halfway mark.

A scintillating start to the campaign will count for little if Milan tail off over the coming months, which Ibrahimovic acknowledged when he considered the prospect of earning a place in next season's Champions League.

Inter and Juventus appear to be the biggest threats to Milan's lead, which stands at three points after 17 games. Milan are next in action when they face Cagliari on Monday.

"It is early. How much is still to go? All the second half of the season plus two games," Ibrahimovic said.

"Furthermore, setting goals is like setting limits. I never do it. Second place is the first of the last. I want to get the best out of me and the team, every day, including training."

The former Manchester United and Paris Saint-Germain frontman is enjoying a second stint with Milan, after a fruitful first spell from 2010 to 2012, when he featured in that 2010-11 title-winning team.

"Ten years ago it was another Milan. But also the Milan that I found in 2020 was different. Always a very young team. We have worked, we sacrificed ourselves. Here are the results," said Ibrahimovic.

"We are doing great things, it is true, as it is true that we have not won anything. There is the desire to do more."