Inter Milan coach Roberto Mancini is set for crunch talks at the club after a crushing 3-0 derby defeat to AC Milan left a sizeable dent in his side's Serie A title hopes. Mancini was sent off for dissent in the second half of a stormy encounter at the San Siro Sunday, where he lost his composure on his way through the tunnel by sticking his middle finger up to a group of Milan fans. The 164th ‘Derby della Madonnina' — as the fixture is commonly known — turned in favor of host Milan when Inter striker Mauro Icardi's 70th minute penalty came off the post. Inter's heads dropped and Milan capitalized with two quick goals in succession from Carlos Bacca and M'Baye Niang adding to Alex's 35th minute opener to hand Mancini's men their heaviest derby defeat since a 3-0 reverse in April 2011. Inter remains in fourth place but is now nine points adrift of leader Napoli, which thumped Empoli 5-1 at home the same day as champion Juventus routed Chievo 4-0 in Verona to stay within two points. Bayern blanks Hoffenheim In Berlin, Robert Lewandowski scored twice for Bayern Munich to restore its eight-point lead over his former club Borussia Dortmund with a 2-0 win against Hoffenheim Sunday. The Poland striker broke the deadlock in the 32nd minute and sealed the result in the 64th with his 19th goal of the season. Lewandowski later hinted that he might follow Pep Guardiola in leaving the Bavaria giant next season. Earlier, Anthony Modeste scored late to earn Cologne a 1-1 draw and extend Wolfsburg's six-game run without a win in the Bundesliga. PSG equals longest run Zlatan Ibrahimovic scored both goals as leader Paris Saint-Germain equaled the longest unbeaten run in the French league with a 2-0 win at Saint-Etienne Sunday. PSG has not lost a league match since March last year and is now unbeaten in 32 games, a record set by Nantes 21 years ago. The win extended PSG's lead over second-place Monaco to 24 points after Laurent Blanc's players overcame a strong resistance from Saint-Etienne in a lively encounter. Earlier, Ronny Rodelin and Andy Delort scored in a 2-0 victory over Nice that lifted Caen level on points with its Riviera opponents. After a 5-1 thrashing at the hands of Lille in the League Cup semifinals midweek, Bordeaux recovered to extend its unbeaten run in the league to seven matches with an emphatic 4-0 win over Rennes. — Agencies