Gary Neville believes Eden Hazard made life too easy for Ander Herrera on Sunday.
The Chelsea playmaker was man-marked by the Manchester United midfielder as the Red Devils defeated the title favourites 2-0 at Old Trafford.
Chelsea failed to register a shot on target for the entire match and a lot of that was down to Herrera's stopping job on Hazard, who according to ex-United captain Neville, was immature and naive in dealing with such close attention.
"I've got loads of time for him, a great player," Neville said on Sky Sports' Monday Night Football.
"I always think that maybe he needs to go that step further. Is he a little bit timid to be what would be a real selfish and horrible best player in the world? A Cristiano or Messi type that really has that drive and determination.
"Against Manchester United I thought he accepted things too easily. He made it easy for Herrera far too often."
He added: "He showed a lack of maturity and a little bit of naivety.
"He almost thought 'this is really difficult, he's man-marking me' and accepted it. He didn't go and do something different.
"Hazard fell short in his understanding of playing against the man-marker. He needed to play high and wide or high and through the middle - and next time he might."
Source: tribalfootball.com