Valon Behrami's agent claims to be '99 per cent certain' his client will be staying at West Ham.
The versatile Swiss star has been the subject of mounting transfer talk of late, with his future believed to be hanging in the balance.
Rumours of a proposed move to Serie A outfit Palermo refuse to go away, with the Italians admitting to holding an interest in the player.
West Ham have no intention of selling, though, with the club keen to avoid a repeat of their 2009/10 relegation dogfight.
They have revealed that they are willing to listen to offers for a number of their first-team squad, but have made it clear that Behrami is not among them.
That means the 25-year-old, who is currently preparing for World Cup duty, will still be at Upton Park come the end of the summer.
"Valon is thinking about the World Cup, his future will be tackled later," Behrami's agent, Alessandro Beltrami, told tuttomercatoweb.
"West Ham have declared him non-transferable, so I think it is 99 per cent certain he will remain in England.
"Talk of Palermo? That is good because it means the player has done well. However, we are happy that West Ham have made him unavailable for transfer."