According to the Gianluca Di Marzio website in Italy Fulham are in the closing stages of a deal to acquire Marlon Santos.
The transfer for the Brazilian defender from Sassuolo will be finalized on Thursday morning, he will then leave for the UK to undergo his medicals and sign for the Premier League club.
The offer for the outright purchase of Marlon was close to €15m.
Barcelona held the right to match the offer and were informed of the bid.
Marlon will move to Fulham after his experiences at Fluminense, Barcelona, Nice, and Sassuolo.