Brighton have rejected an offer from Saudi Arabian club Al Nassr for winger Kaoru Mitoma worth £54m (€65m).
It is understood the Japan international is not for sale.
Al Nassr's move for Mitoma comes amid the Saudi Pro League side closing in on a £64m deal for Aston Villa striker Jhon Duran.
Al Nassr's deal for the Colombia international is part of a new Saudi strategy to focus on singing young and developing players rather than being regarded as a retirement home for ageing superstars.
Now the club Cristiano Ronaldo plays for are eyeing a move for another Premier League player in Mitoma.
The 27-year-old joined the Seagulls from Japanese side Kawasaki Frontale in 2021 for a reported £2.7m before spending the 2021/22 season on loan at Belgian club Union Saint-Gilloise.
Mitoma made his Brighton debut in August 2022 has since made 92 appearances in all competitions, scoring 18 goals.
Mitoma has played in all 23 Premier League games for Fabian Hurzeler's side this season and has netted five goals.