Paul Merson believes Chelsea are not as good as they once were, but says the Blues need to give Frank Lampard time to steady the ship at the west London side.
The club legend who replaced Maurizio Sarri at the Stamford Bridge helm in the summer, has sealed five points from a possible twelve after one win from four matches in the Premier League.
They threw away a two-goal lead to draw 2-2 against newly-promoted Sheffield United on Saturday, and former Arsenal midfielder says the Blues have lost their fear factor, adding the young players at the club need time to meet expectations.
Read more: Tough, But Great UCL Draw For Chelsea.
He told Sky Sports' The Debate: "I was disappointed with them in the last 30 minutes against Man Utd, I thought they threw in the towel and drifted away.
"But elsewhere, it's a difficult one; as a new manager you want to come out and entertain. I'm a Chelsea fan. If Mourinho was 2-0 up against Sheffield United, he'd bring off a striker and put on another defensive midfield player. That was the end of the game, end of, and the other team knew that as well.
"The other teams don't know that now. Chelsea haven't got that fear factor anymore. Now, teams like Leicester can stay in the game against them, and towards the end it looked like maybe Leicester would win it."
'Chelsea haven't got that fear factor anymore.'
He continued: "I like Frank, and I think you get experience as you go. Would somebody else have played Mason Mount? He's a special player. And now Tammy Abraham has four goals.
"We only do this by learning, you don't get five games down the road and say: 'You're out of the team,' if they're not performing. You go back to square one like that. Patience, patience. These are young kids.
"Man City and Liverpool are so far ahead of everybody now, this is a different situation. If Chelsea finished in the top four this season, Frank would get manager of the year, in my opinion."