West Ham United are looking to build upon a successful season in the most recent campaign by reaching new heights next term in their first season at the Olympic Stadium, and El Confidencial reports that they have made Manchester United star Juan Mata one of their primary transfer targets.
Mata played in every single Premier League match under Louis van Gaal this season, scoring 10 goals in 54 appearances in all competitions for United but was criticised on occasion by Red Devils supporters for inconsistent form.
With the Spaniard's former Chelsea manager Jose Mourinho taking charge of the club this summer, Mata's future is thought to be up in the air, with the two men holding no love lost for one another.
Mata had been a key, instrumental player for the Blues before the Portuguese boss took over for his second spell at Stamford Bridge in 2013, winning two consecutive player of the year awards for the club.
However, he was frozen out by the new manager and was sold to United for £37 million in January 2014, and it is speculated that Mourinho's arrival at Old Trafford could see him on the move again.
Spanish outlet El Confidencial report that West Ham have been monitoring the situation and had already made an enquiry for the 28-year-old playmaker as they look to take the quality of their side up another notch.
The Hammers already have such attacking midfield stars as Dimitri Payet and Manuel Lanzini, but Mata would be a marquee signing and a huge coup for the London club, but it is thought that they will face competition from the midfielder's former club Valencia.
The Spanish international has won the World Cup, European Championship, Champions League, Europa League, and two FA Cups in his career to date, and would bring quality and a winner's mentality to the Irons.