Chelsea FC has asked an external law firm to conduct an investigation concerning an individual employed by the club in the 1970s.
In a statement, the football club said the person who will be at the centre of that review is now deceased.
Chelsea says it will be providing "all possible assistance" to the Football Association, which has begun an independent review into historical allegations of child sexual abuse in the sport.
The club said that includes providing the FA "with any relevant information arising out of the club’s investigation".
"While the club's investigation is ongoing, we will make no further comment on this matter," the statement adds.
Eight police forces in the UK are also looking into claims of non-recent child abuse - with Police Scotland the latest force to examine allegations made by former players.
The House of Lords in the UK heard that 250 people had contacted police in England and Wales alone over recent days.
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