Crystal Palace are working on a deal for Juventus defender Tiago Djalo, 24, who will have to cut short his loan with Porto before transferring to Palace.
The centre-back has made 12 appearances for Porto so far and has scored twice.
Djalo made his senior debut for Portugal when he featured as a substitute against Porto in November last year.
After starting out at Sporting, he joined AC Milan in 2019 but didn't play a competitive senior game for the Italian club.
A move to Lille followed, with Djalo making over 100 appearances.