Chelsea and Tottenham are reportedly keeping tabs on Newcastle goalkeeper Tim Krul, but will have to spend big to lure him away from St James' Park.
Krul has been in fantastic form for the Magpies this season, and is fast establishing himself as one of the finest glovemen in the Barclays Premier League.
According to The Sun, both Chelsea and Spurs are interested in the 23-year-old, with the former wanting to recruit competition for Petr Cech and the latter searching for long-term replacement for Brad Friedel.
However, should Andre Villas-Boas or Harry Redknapp formalise their reported interest in Krul, they would have to splash at least £15 million to secure the Dutchman's signature.
"Tim is now widely recognised as one of the best goalkeepers in the Premier League," a Newcastle source told The Sun.
"It's a very specialised market when you are searching for a keeper of that quality.
"You've got to be talking £15m, maybe more. That's how highly we value him."