Sheffield United boss Neil Warnock has warned West Ham that midfielder Phil Jagielka is not for sale.
Jagielka is a prize asset
The Blades' boss insists no approach from the promoted Hammers has been made, and he would not welcome one.
Warnock told the Sheffield Star: "We've made it clear we don't want to sell him, and that remains our position.
"Phil has assured me he's happy here and wants to stay and it would take some extraordinary - in fact ridiculous - bid for us to reconsider."
Jagielka has made more than 200 appearances for the Blades and is rated as one of the brightest prospects in the Championship.
But Warnock accepts Sheffield United may find it hard to cling on to Jagielka if they cannot provide him with Premiership football.
Warnock said: "I'm not daft, I realise that if we don't get into the Premiership and stay there we probably won't be able to keep hold of him for ever."