The Greek international was strongly linked with a move to Everton last year, but the deal collapsed.
He then elected to join Olympiakos, for whom he has been relatively successful.
However, rumours have begun to circulate that he could be allowed to leave the club, alerting Martin Jol.
The Cottagers chief is keen to draft in a new centre-back after watching his side make an underwhelming start to the season.
Manolas’ contract expires in 2015, and Olympiakos are believed to be keen to sell while his value is high, due to financial concerns.
Fulham have had scouts tracking the 22-year-old for some time, and are impressed by reports they have received.
A January deal is said to be favoured by Jol, who is desperate not to see his side sucked into a relegation dogfight in the latter stages of the season.
Manolas made his senior debut for the Greek national side earlier this year and has gone on to claim three caps.
Prior to joining the Olympiakos, the defender played for AEK Athens.
Should Fulham swoop for Kostas Manolas?
What are your thoughts?
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