Rooney missed training on Tuesday after reporting for duty with a tight hamstring and was not named on the bench for last night's 4-1 Champions League semi-final win over Schalke.
Take your places: Rooney and Evra (right) set to face Chelsea at Old Trafford in the title decider
Evra was introduced as a second-half substitute but took a knock that at one point looked set to warrant Ferguson making another change.
However, the full-back quickly recovered and Ferguson revealed Rooney's absence was purely precautionary.
'Patrice got a kick.
'I was ready to substitute him but he said he was OK.
'Wayne will be all right. I wasn't prepared to take a risk.'
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