Wolverhampton Wanderers have rejected a £21m bid from Marseille for striker Hwang Hee-chan.
The Ligue 1 side, managed by former Brighton boss Roberto de Zerbi, have been told the South Korea international is not for sale.
Marseille are looking for a new striker after selling Vitinha to Genoa and Iliman Ndiaye to Everton.
Hwang moved to Molineux from RB Leipzig, initially on loan, in 2021 and has scored 22 goals in 94 appearances, including 13 last season.
Wolves have already boosted their forward line after signing striker Jorgen Strand Larsen from Celta Vigo on an initial loan deal, before an expected £23m transfer once certain clauses are triggered during the season.
Gary O'Neil's side are under no pressure to sell their stars after captain Max Kilman's £40m departure to West Ham earlier this month.
They would like to move on Fabio Silva and Goncalo Guedes, who were on loan at Rangers and Villarreal respectively last season.
The pair have not travelled to Marbella with the squad for pre-season training.