Unlucky Phil Jagielka will have knee surgery on Wednesday in London and could be back in action at the beginning of next season.
The 26 year-old Goodison Park defender has already been ruled out of the FA Cup final against Chelsea at Wembley next month.
But the club have rushed through preparation for Jagielka's operation to repair his ruptured anterior cruciate knee ligament, an injury suffered in Saturday's home defeat by Manchester City.
Jagielka fell awkwardly and was carried off, knowing almost instantly his dream date at Wembley was gone.
But by organising the operation to repair the damage so quickly, Everton are giving the England defender every chance of being fit for the beginning of the next campaign, with the Toffees now assured of a place in the Europa Cup.
And Everton physio Mick Rathbone has revealed the state of shock felt by Jagielka and his colleagues after the match on Saturday.
Rathbone said: "We have done this (preparation) as quick as possible..
"He will undergo surgery on Wednesday morning, and is obviously very upset.
"But he is philosophical, and looking to get the operation out of the way so he can start the recovery process as quick as possible.
"Thursday morning is day one of the recovery and we can start counting down until when he plays again."
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