The reason behind this rejection is reportedly due to Soucek's current contract situation. He has two years remaining on his deal with West Ham and has been offered a new contract by the club. This would suggest that Soucek is committed to staying with the Hammers, at least for the time being.
Despite West Ham's poor start to the new Premier League season, Soucek has managed to feature in their recent games, including a 5-1 defeat to Chelsea. With manager Graham Potter taking charge, it remains to be seen how Soucek's role will evolve in the team.
Soucek joined West Ham from Slavia Prague in 2020 for a reported fee of around £19 million. With his current contract situation and the club's efforts to retain him, it seems unlikely that he will be leaving West Ham in the near future.