The Cottagers currently sit in ninth place in the Premier League, and the Dutch manager believes funds will be provided by Mohamed Al-Fayed should he request them.
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"He [Al-Fayed] said before the season you can spend the same amount as last year and we sold for over £30 million and only bought for £8m," Jol told London24.
"So I am 100 per cent certain he knows there is a lot in the kitty."
Fulham sold Mousa Dembele and Clint Dempsey for over £20m during the final days of the summer window, leaving Jol little time to reinvest.
The west London club also made a significant profit on Bobby Zamora last January, and released a number of high earners, such as Danny Murphy and Pavel Pogbrebnyak, off the wage bill during the off-season.
As such, Jol is hopeful that owner Al-Fayed will use those funds to provide a significant transfer budget to spend in the coming transfer window.