Dutch goalkeeper Maarten Stekelenburg will reject a new contract at Ajax, swelling rumours of a possible move away, according to ESPN soccernet.
The £15 million rated keeper's current deal runs out next year, after the Dutch Champions offered the 28-year-old a new deal until 2015.
But with Arsenal and Manchester United prowling, Stekelenburg is expected to put them on red alert by rejecting a new deal.
"We are obviously listening to what Ajax want. They have always been a good employer and we have a good relationship," his agent, Rob Jansen, told Algemeen Dagblad.
"However, Maarten has clearly set his sights on a transfer to a good club in a bigger league."
Arsenal has seen goalkeeping problems undermine their title challenge this season, while United, who beat The Gunners to the title, need to replace the retiring Edwin van der Sar.
Both Arsenal and United, like Ajax, who confirmed the Dutch title after beating FC Twente at the weekend, will both be able to offer the World Cup runner-up, Champions League football.
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