Calum Chambers is expected for a medical at Fulham on Monday after Arsenal agreed to let him move to Craven Cottage.
The 23-year-old defender agreed a new four-year contract in July and is expected to sign on a season's loan.
Fulham manager Slavisa Jokanovic is in desperate need of experienced defenders as Alfie Mawson is not expected to be fully fit until September.
Chambers can cover a number of positions but Fulham still need another centre back.
They had made a bid to sign Yerry Mina on loan from Barcelona though he has spoken to other clubs including Everton and Manchester United.
The Premier League newcomers have signed six players so far in the summer transfer window, which closes on Thursday