The Chelsea skipper's life has been turned upside down by off-field revelationsthat have plunged him into despair and cost him the England captaincy.
He has sought refuge on the pitch with a series of sterling performances since his indiscretions became public, but Everton boss David Moyes believes that may be about to change after Louis Saha ended months of uncertainty about his future bysigning a new two-year deal.
Saha was known to be growing concerned at the deadlock over a contract that was due to expire this summer but has been backed to recapture his early-season form at Terry's expense after resolving it on improved terms of £55,000 a week.
Moyes said: 'Louis is real quality, and on his day there will bemany centre backs saying he's as difficult a centre forward to playagainst as there is and those days are becoming more and morefrequent.
New man: Terry (left) is set for a battle against a richly improved Saha
'When he came here, the first thing we had to see was if he was overhis fitness problems. That's why he signed for a year with the optionof another. His fitness is just about there now, which is why we'vegiven him another two years.
'Everton suited Louis too, and there is every reason for believinghe will get plenty more goals for us. We have managed to get him on thefield, get him playing and he knows he's well liked and respected here.He's doing great for us.'
Moyes knows Terry will be targeted by the Goodison crowd but feels he has the strength to handle it.
'That's football now that players come in for this sort of stick,' he said.
'But John Terry is the captain of Chelsea and I'm sure he's not out there playing for them thinking about the England captaincy. He will not be thinking of England when he is playing for Chelsea, I am sure of that.
'But, equally, if we can get our centre forwards right, I think we can cause Chelsea problems.'
Moyes is still unsure about the recovery period for Marouane Fellaini, who faces a scan tomorrow on the injury that forced him off in the first half of Saturday's derby defeat at Anfield.
'It is a massive blow to lose him,' the Scot said, as he prepared for his 300th Barclays Premier League game as Everton manager. 'It was noticeable how much we missed him when he went off on Saturday. He has been a really influential player for us but at least, in terms of numbers, we are not struggling to fill that role now.
Stretchered off: Fellaini receives treatment after falling foul of a two-footed lunge by Liverpool's Sotirios Kyrgiakos
'His ankle was swollen terribly. It was the size of an elephant's ankle and it shocked me how bad it looked. I couldn't tell you if he'll be out for three days or much longer, it would be wrong to speculate at this stage.'
Chelsea manager Carlo Ancelotti is acutely aware of Chelsea's need to match Manchester United stride for stride now that Sir Alex Ferguson's side have embarked on their customary post-Christmas burst.
Unshaken: Ancelotti is focused on Chelsea
He said: 'We have to control our job. Our job says we have to do our best to win the game.
'I'm not interested in what Manchester United do at Villa. It will be a difficult game for them but our job is to try to beat Everton and nothing else. If we win and stay two points ahead it's good for us.'
Ancelotti confirmed that Terry will start despite picking up a thigh problem at the weekend.
But the Italian conceded that he is pre-pared to give Terry compassionate leave for Chelsea's FA Cup fifth round meeting with Cardiff on Saturday.
Asked whether he would grant Terry time off to be with his wife, Toni, who is in Dubai, Ancelotti replied: 'We will take the decision together because we want to respect the FA Cup. Terry is one of the most important players in this team but we have other fantastic defenders so he is not indispensable.'
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