Marco Silva is keen on bringing in a left-sided centre-back to his squad and added Bassey and Southampton’s Salisu to his wishlist.
Fulham have managed to get their hands on 23-year-old Bassey, who signed a four-year deal with the Cottagers and that raised question marks over a move for Salisu.
It had been suggested that Fulham are only looking for one left-sided centre-back this summer and the signing of Bassey might close the door on Salisu.
However, Southampton could still be able to sell Salisu to Fulham as the arrival of Bassey has not affected Fulham wanting him.
Southampton are open to selling the Ghanaian international this summer and Ligue 1 side Monaco are also interested in him.
It is said that Southampton have slapped a £15m asking price on Salisu, who has one more year left on his contract.
Fulham have yet to submit an official bid to Southampton and it remains to be seen where Salisu’s future lies.