Chelsea and West Ham are among the clubs monitoring £15million-rated Gent defender Archie Brown.
The 21-year-old is considered an option as the two London clubs look to sign a left-back in the summer.
Juventus, AC Milan, Nice and Lyon are also weighing up a move for Brown, who is set to be the subject of plenty of interest at the end of the season.
Chelsea want cover for Ben Chilwell, as Marc Cucurella is potentially up for sale after being offered to clubs last summer.
Ian Maatsen is available for the £35million release clause agreed in a new extended contract until 2026, when moving on loan to Dortmund in January. Lewis Hall is also expected to make his loan move to Newcastle permanent for £28m if all add-ons are met.
West Ham are searching for a deputy to Emerson Palmieri at left-back, with Aaron Cresswell, 34, almost joining Wolves in the summer and potentially ready to leave east London this summer.
Brown left English football when moving from Derby County to Lausanne in 2021. After two years at the INEOS-owned Swiss club, now part of a multi-club group with Nice and Manchester United, he moved to Belgian giants Gent.
The Birmingham-born winger-turned left-back has played 31 matches this season, including eight games in the UEFA Conference League.