West Ham forward Marko Arnautovic could be subject to a bid from Jose Mourinho this summer, according to Gianluca Di Marzio.
Manchester United are looking to strengthen their squad after finishing runners up to rivals Manchester City last term.
The Red Devils have already reportedly agreed a deal worth around €50 million for Brazilian midfielder Fred from Shaktar Donetsk, and are set to carry on spending.
Full-back Matteo Darmian is set to complete a move to Juventus and United boss Mourinho is keen on getting striker Mario Mandzukic in return.
However, if a move for the Croatian is not possible, it has been suggested that Arnautoivc will be his alternative choice.
The Austrian forward has had an impressive season at West Ham, after joining for £25 million from Stoke last summer, scoring 11 goals this season.
That is the most goals scored by a single Hammers player in a season since Bobby Zamora back in 2007.
The East London club will be eager to keep hold of their prized assets and give Manuel Pellegrini the best possible chance of success.
