Luis Felipe Scolari has admitted Chelsea are not playing well enough to win anything.
The Blues slumped to a 3-0 defeat at Manchester United yesterday that leaves them four points adrift of table-toppers Liverpool and only one in front of Sir Alex Ferguson's men, who have two games in hand.
A whispering campaign against the Brazilian is starting to gain momentum and the fact that Jose Mourinho was at Old Trafford yesterday only fuelled comparison with what has gone before.
Scolari insists he takes full responsibility and acknowledged Chelsea must improve quickly.
"We are not playing well enough and we will win nothing like this,” he said.
"The title has not been won or lost. We have another 17 matches to play yet, so who knows what will happen.
"But if we play three or four more matches like this one against United we will not win anything.
"Now we must think about the future. We need to be men and improve, not feel as though we have lost everything. I am not that type of person and I don't think my players are either."
Should Chelsea lose Wednesday's FA Cup replay at Southend, Scolari really will be in trouble, though the Brazilian claimed that he was happy with his squad, adding that he was not going to get any reinforcements despite the £10million sale of Wayne Bridge to Manchester City.
He said: "We don't need more players. I don't think they will arrive and I don't want them anyway. This is my squad and I will improve them."
Scolari claimed not to have heard the disgraceful chants at Cristiano Ronaldo from the visiting section following the winger's car crash on Thursday.
Referring to the presence of Mourinho in the stand he said: “There is no real pressure from my perspective. Mourinho came here to watch Manchester United for the Champions League match next month. That is normal practice and I have no problem with it.”