Chelsea are keen on signing Fulham midfielder, Andreas Pereira, according to ESPN.
The Blues have begun considering replacements for Mason Mount.
Mount is yet to agree fresh terms with the Stamford Bridge side and could leave in the summer, before becoming a free agent in 2024.
Liverpool, Manchester United and Manchester City are all interested in taking the England international from Chelsea.
Chelsea will now look to Pereira to fill the void if he leaves.
Pereira's form has also attracted attention from Paris Saint-Germain and Atletico Madrid.
Only five players have registered more than his six Premier League assists this season.
Pereira is believed to be happy at Craven Cottage, but would find the chance to join one of Europe's leading clubs hard to turn down.
His future may also depend on that of Fulham manager Marco Silva, who Pereira credits with getting the best out of him so far this season.