Petr Cech has taken responsibility for Chelsea's defeat against Manchester City and will now sit out their final Champions League group game.
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Cech was criticised for allowing Carlos Tevez to score a 25-yard free-kick winner at Eastlands on Saturday and although Carlo Ancelotti defended his goalkeeper on Monday, he did not train with back-up keepers Hilario and Ross Turnbull.
He instead underwent a solo session in the afternoon although he is due to return to training with the full squad on Tuesday.
Seven of the 10 goals conceded by Chelsea this season have come from set-pieces and Cech, who will be replaced by Turnbull against APOEL, admits he should have kept out Tevez's shot.
"I don't want to go into whether it was a free-kick in the first place - I should have saved it," said Cech.
"It was a very poor free-kick and it finished in the back of the net because I anticipated too much.
"I made a step to the wrong side just before Tevez fired the shot. At that moment it was too late to move to the other side to save the ball. It was a soft goal to concede.
"We didn't deserve to lose. The most important thing is how he we respond in the upcoming fixtures. Every time you make a step back, you need to make two steps forward."
Ancelotti has no concerns over Cech's form and said: "Even a good goalkeeper can make a mistake sometimes but Petr has been doing very well this season."
