Manchester United face competition from a number of clubs in the race to sign Maarten Stekelenburg.
The Dutch international keeper is thought to be one of a number of players in the position on the Old Trafford radar, with Sir Alex Ferguson actively searching for a successor to the retiring Edwin Van der Sar.
With Manuel Neuer set to join Bayern Munich, Stekelenburg is thought to be one of two potential options for Manchester United alongside Atletico Madrid stopper David De Gea.
However, Ajax are reportedly keen to keep the 28-year-old in the Eredivisie, with the player's agent claiming earlier this week that the Godenzonen have offered him a new contract.
Tottenham Hotspur boss Harry Redknapp is also keen on bringing the player to England, with the Spurs boss considering a replacement for the error-prone Heurelho Gomes, according to talkSPORT.
Various reports now claim that Schalke have joined the race for the player, with the Bundesliga side looking to replace the aforementioned Neuer has he departs from the Veltins-Arena.
Impressive at both domestic and international level, Stekelenburg has filled the gloves of his compatriot Van der Sar for the Dutch national side and has been tipped to do the same with Manchester United by a handful of high-profile figures.
The Red Devils' first team coach René Meulensteen confirmed in January that the Dutchman was at the top of the Manchester United wanted list, and little is thought to have changed in that department.
It's thought that £11 million would be needed to prize the player away from the Amsterdam Arena.
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