I found this summary on how they can sign players on getwestlondon.co.uk
"If Fulham reach a stage where they have less than 24 established stars in their ranks, Slavisa Jokanovic will be able to start looking at replenishing his squad with signings.
But the Whites can only add a new addition...
We need to think about building a squad fit for Premier League football, in my opinion Rohan does look anywhere near that standard. Get a decent price for him and let him get games elsewhere.