Chelsea manager Guus Hiddink has warned the club not to expect any miracle upon his appointment.
Hiddink watched from the stands as Chelsea beat Sunderland 3-1, but will be in charge against Watford.
The dutch manager led Chelsea to FA cup glory back in 2009, but has stated it won’t be easy to turn things around.
He said: “If you look back a bit to last season where there was this huge success in winning the title then of course you go into the next season and you have your targets, your aims and your aims are the same.
“Getting the championship again, even though in the Premier League that is not easy, that was the main target. The other targets of course are to go into the Champions League and the FA Cup.
“But it is not easy to fix as sometimes after a championship you might relax a bit as a team and then you get a wake-up call from somewhere in September, but the situation is that they were down last week to one point off the relegation zone, which was frightening for everyone inside the club.
“It is not easy to say ‘I am here and tomorrow the problem is solved’.”
Nevertheless, Hiddink revealed he was impressed by much of what he saw from his new players against Sunderland.
“I was in the stand and of course I saw the game and they were playing in a way in general like they enjoyed it very much,” added the former Netherlands boss.
“There were some sloppy moments in the first 45 minutes and then sometimes they even went a little bit over the top and didn’t kill it off after going 2-0 up but it was good to see how they can play – the quality is there.”
The Dutchman did not rule out the prospect of Chelsea finishing in the top four, but suggested it was a tough ask given the how open the Premier League has been this season.
“Mathematically it is possible, if you can add up then it is possible but this league is very strong,” said Hiddink.
“That has been especially proven this year with all respect to the clubs at the top – Leicester, Crystal Palace, Watford – it is amazing and refreshing.
“It means that all the teams can kill each other.”