West Ham have made Nice an offer for forward Alassane Plea.
The Hammers are believed to have offered around £26.5m for the French striker, who is also wanted by Tottenham and Fulham.
Spurs watched him for much of last season, while Fulham have identified him as a possible signing following their promotion back to the Premier League.
But West Ham have made the first move, with boss Manuel Pellegrini keen to boost their attacking options before the new season starts.
Plea, 25, began his career at Lyon and has impressed since joining Nice in 2014.
He scored 20 goals last season and reports in France have suggested that several European clubs have been showing an interest.
One of those clubs is Newcastle, who were linked with a move for him last month.
Reports in France have also previously suggested that Tottenham offered around £23m for Plea and that Nice could be willing to sell him for around £27m.
Plea, who can operate as a winger, has represented France at Under-21 and various other age levels.