Manchester United boss Jose Mourinho has suggested that some of his players do not care enough about the club's poor run of form.

United have already suffered three defeats in the Premier League this season, leaving the club in 10th place and nine points adrift of leaders Manchester City.

Mourinho and his players were heavily criticised after the 3-1 setback at West Ham United on Saturday afternoon, and the Portuguese has questioned the desire of some of his squad.

At a press conference ahead of Tuesday's clash with Valencia, the 55-year-old told reporters: "I told already that after 20 years of football, I am still the kid I was and am still naive. I don't believe the players are not honest. I think that some care more than others."

Mourinho would not elaborate on his comments as United look to register a second successive win in the Champions League against the La Liga side.