Manchester United boss Jose Mourinho has put his side's 4-0 defeat to Chelsea down to "incredible defensive mistakes".

Goals from Pedro, Gary Cahill, Eden Hazard and N'Golo Kante inflicted the Portuguese with his heaviest Premier League defeat upon his return to Stamford Bridge.

"We were coming to have an offensive approach, we wanted to create chances, we showed that after the 1-0," he told Sky Sports News. "The second and the third were counter-attack goals. If we score a goal like we almost did for the 2-1 the game would be different.

"It is one of those days when you give the advantage to opponents by doing nothing. We made incredible defensive mistakes, individual mistakes and you pay for that.

"In terms of points, we got zero points, we lose three points. We are six points from the top, three from the top four, we now need to win matches. We need to win our matches now, which are not easy, we need to win to close that gap, after these last three matches, we made two out of nine, we now need points."

The result leaves United in seventh place in the league table after nine matches, while Chelsea climb to fourth.