Manchester United are expected to spend big this summer for their first season in the Champions League under Jose Mourinho.
Inter Milan confirmed last week the Red Devils have been chasing Croatia international Ivan Perisic.
Reports suggested they had lodged a £26million bid for the winger which was rebuffed by the Serie A club.
However, Italian outlet CalcioMercato claim United returned with a second bid of £45m which has now been accepted by Inter.
And the transfer is expected to be finalised next week.
Manchester United have reportedly agreed a £45m deal for Ivan Perisic
Inter Milan confirmed Manchester United's interest in Ivan Perisic last week
CalcioMercato claim Perisic was one of Manchester United's top summer transfer targets.
Negotiations for the 28-year-old are said to have got underway in March when Jose Mourinho travelled to Zagreb for talks with his representatives.
The report says Perisic's deal with United will see him almost double his salary, agreeing an £85,000-a-week contract.
The transfer will reportedly be tied up next week as Inter's owners look to balance the books and end Fifa's Financial Fair-Play restrictions against them.
Manchester United summer transfer targets Tue, May 30, 2017
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Express Sport takes a look at who could be on Manchester United's shopping list this summer
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Speaking about United's interest in Perisic last week, sporting director Piero Ausilio said: "They [United] haven’t made us an official offer for Perisic but their interest is there.
"We want to improve Inter and this is why we do not have any sellable or un-sellable players as of now.
"We know that we already have many important players within our roster like Perisic and before we decide to sell him, we have to think about what’s best for Inter.
"For me we have an as good squad or maybe even a better squad than most of the teams who finished ahead of us.
"We don’t need all that much, we will certainly make some moves but we will first have to see what our new coach will want."