Porto are moving for Chelsea defender Malang Sarr.
With Alex Telles now in England to sign for Manchester United, Porto plan to take Sarr on-loan as his replacement.
Sarr joined Chelsea this summer as a free agent after coming off contract at Nice in June.
Chelsea's plan has always been to send the defender away on-loan this season.
While recognised as a centre-half, Sarr is also comfortable at left-back.