Fulham have signed Terence Kongolo from Huddersfield in a £4m deal.
Kongolo, 26, moved to Craven Cottage on loan in January but suffered an injury soon afterwards and did not start a league game for the Whites.
He returns on a four-year contract with the option of an additional year.
“I’m really happy. It’s been a while, been waiting the whole day, but the end result is I can play for Fulham,” he told the club website.
“I’m proud to be here and I will give everything for this club.”
The deal to sign him was pushed through before Friday’s domestic transfer deadline – hours after news that recent signing Joachim Andersen has been sidelined by an ankle injury.
The arrival of another centre-back is a boost for boss Scott Parker following the loss of Andersen, who recently arrived on loan from Lyon.