Joe Cole admits that Chelsea cannot afford to lose their Champions League game at Valencia on Wednesday.
Cole says Chelsea need to move on from Jose Mourinho's departure
Chelsea drew their first match at home to Norway's Rosenborg and the game in Valencia is their first in Europe since they split with coach Jose Mourinho.
"We need to go out there and get the result," the midfielder said.
"We've only got one point on the board in the Champions League so it's a game we must not lose. We want to go home with all three points."
Chelsea have won only one of their last six games - and that was against Championship side Hull in the Carling Cup.
And they are a lowly eighth in the Premier League after a defeat and a goalless draw in new manager Avram Grant's first two games in charge.
Chelsea put in one of their best performances under Mourinho in Valencia's Mestalla stadium last season, coming from a goal behind to win 2-1 and book a semi-final against Liverpool.
But Cole admits that Chelsea will lose in Valencia on Wednesday if they do not improve their form.
"It's a tough place to come and they are a side with great players," the England midfielder said.
"We need to be five to 10% better than we've been all season. We need to improve.
"That is everyone, including myself, we are not firing on all cylinders at the moment.
We want to draw a line under Jose Mourinho's era now and look forward
"As a team we want to go out and win. Maybe a draw would be a good result, but we want to come here and get a great result.
"We are improving and we don't think it will be too long before we are back to our top level and higher."
And Cole says they need to forget about Mourinho, who led the side to consecutive Premier League titles in 2005 and 2006 and the Champions League semi-finals in the last two years.
"The club were very successful under Jose but in football things move on and things change," he said.
"We want to draw a line under that now and look forward. The atmosphere has been fine, obviously nothing runs smoothly when there is any change among leaders and managers.
"We all just want to look forward to a successful future with Avram and Chelsea, and win things."