Eintracht Frankfurt have accepted they face losing Andre Silva for a knockdown buyout clause.
The 25-year-old Portugal international has been in sensational goal scoring form since arriving on loan from AC Milan last season, and signed a three year deal to join the Bundesliga club last summer.
Sport 1 says the prolific marksman has a £26 million release clause, that can be triggered this summer.
Silva has notched an impressive 24 goals and nine assists in all competitions this season, and is rumoured to be on United's radar.
United boss Ole Gunnar Solskjaer could be tempted to go into the market for a striker this summer, with the futures of his current forward line uncertain.
It remains unclear whether Edinson Cavani will stay at Old Trafford next season. The 34-year-old signed a one year deal last summer and whilst there is an option to extend it; the Uruguayan has been linked with a return to South America.