Chelsea ace Frank Lampard believes Jose Mourinho's return has helped improve both his game and that of his team-mates.
Mourinho returned to Stamford Bridge at the end of last season and began a successful second spell with a comfortable 2-0 win over Hull City on Sunday at Stamford Bridge.
Lampard netted the second goal with a thunderous free-kick after Oscar's opener.
However, the England international has likened the Portuguese manager's return of that of having a new teacher at school who everyone wants to try and impress.
He said: "We have a new manager and he is very demanding."
"We are very aware of how he is and it's like having a new teacher at school, that can only be a good thing when you have 22 players all wanting to play in the team.
Lampard also believe that Chelsea had a great pre-season while young players were blended and made fit.
"There has been a lift. We have had a great pre-season. The young players have reacted to the manager, he added
"We can't ask for more than that and we were raring to go from the first whistle.
"What matters now is we have to face an Aston Villa team this week that has just beaten Arsenal, so we can't rest on our laurels.
"Beating Hull has given us a boost. It's about getting out of the blocks quickly."
The spectacular midfielder is anticipating victory against Aston Villa in their next Premier League outing on Wednesday.
Villa, however, began their season in impressive style with a 3-1 win away to Arsenal, and will pose a stern test for the Blues when they visit the Bridge.
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