Brahim Diaz, Ante Rebic and Fikayo Tomori scored as Milan moved up to third in Serie A with a stunning win over Juventus.
Zlatan Ibrahimovic's second-half red card made life complicated for Milan, but Stefano Pioli's 10 men saw off Parma 3-1 in Saturday's clash.
Ronald Koeman has reportedly identified Erling Haaland as among his priorities for Barcelona this off-season.
Milan deserved more than a draw against Manchester United at Old Trafford, according to head coach Stefano Pioli.
Milan, without the injured Zlatan Ibrahimovic, relied on a last-gasp penalty from Franck Kessie to salvage a point against Udinese.
Pre-match optimism from Milan appeared misplaced on Sunday as Inter convincingly won the derby to take charge of the Serie A title race.
Sunday sees Serie A's top two meet in the Milan derby, and Franck Kessie is convinced his side will emerge victorious.
Manchester City have cut their five-year offer to Lionel Messi by £170million (€196m), according to a report.
Milan saw Zlatan Ibrahimovic miss a penalty in a 2-1 victory at Bologna, a result that extends their lead at the summit.
Rafael Leao and Franck Kessie scored against Torino as Milan increased their lead at the top of Serie A to four points.