With the signing of Victor Lindelöf already secured, reports suggest Manchester United manager José Mourinho is looking to make at least three more additions this summer.
Having been linked with enough players to fill three new starting line-ups, it can be difficult to separate the wheat from the chaff when in comes to transfer rumours relating to the Red Devils.
Here, we take a look at the top five United transfer stories according to the Football Whispers Index, which scores the validity of transfer rumours out of five, to see who could be the next new arrival at Old Trafford.
Álvaro Morata – Real Madrid – 4.1
Antoine Griezmann was United's top attacking target this summer but Atlético Madrid's transfer ban scuppered the 20-time champions' chances of landing the French superstar.
So they are now targeting a more conventional No.9 to replace Zlatan Ibrahimović, who departed this summer after just one year at Old Trafford.
Morata has been identified as the man for the job. United are reportedly hoping to land the Spain international, who averaged a La Liga goal every 89 minutes last season, for around £60million.
But the European champions are holding out for a whopping £78million for the 24-year-old.
Morata got married in Venice last weekend which may have delayed negotiations somewhat, but Madrid-based newspaper As believe the striker wants to move to Old Trafford, while The Sun report Mourinho is keen to wrap up a deal in time for the club's upcoming tour of the USA.
Ivan Perišić – Inter Milan – 4.0
Much like with Morata, United's interest in Inter Milan winger Perišić has been widely reported at home and abroad.
The 28-year-old Croatian fits the mould of the hard-working and productive kind of player Mourinho likes in the wide positions.
According to The Independent, Perišić is “desperate” to join the Red Devils and personal terms will not be an issue.
However, Inter have set an asking price in excess of €50million for the former Borussia Dortmund winger, while United value him closer to the €30million mark. It could prove a sticking point for any deal.
Inter reportedly need to raise around €30million before the end of the month to avoid a Financial Fair Play sanction, and are planning to do so through the sales of Ever Banega and Marcelo Brozović — an Everton transfer target.
But if they are unable to do so, Perišić's sale to United could become an inevitability.
Marquinhos – Paris Saint-Germain – 3.8
Globo Esporte in Brazil claim United are one of three teams in the hunt for PSG centre-back Marquinhos, and have even made a staggering €70million offer for the player.
However, the capture of Swedish defender Lindelöf from Benfica has lessened Mourinho's need for further additions in that area.
If indeed a bid was made for Marquinhos, it is highly likely that it happened before Lindelöf's signing, meaning United‘s interest may not be as strong as in previous months.
Fabinho – Monaco – 3.8
Last week, to the disappointment of many United fans, several British journalists reported the Red Devils held no real interest in Monaco midfielder Fabinho.
The widespread and co-ordinated nature of the reports suggested than the information came directly from the club itself via a briefing.
Then, to the surprise of many, Italian sports daily Corriere dello Sport reported this week United have agreed a deal with the French champions for the 22-year-old Brazilian, with an upfront fee of €35million plus another €5million in conditional add-ons mooted.
In an appearance on Brazilian television show Esporte Interativo, Fabinho, when asked about the rumours, said: “It's a tempting invitation. I would first talk to my agent, Monaco too, to decide everything right.
“But it's a great club, sure enough I would think well about it.”
Corriere dello Sport reports several transfer stories daily, many of which never come to fruition. But the boldness of the Fabinho claim suggests that the journalist in question, Davide Russode Cerame, is confident in the information he has received.
The Italian reporter even went so far as to state on Twitter that the transfer would happen “nest week”.
United are believed to be in the market for a defensive midfielder, with Nemanja Matić and Eric Dier thought to be top targets. Fabinho, however, who scored nine goals for Monaco last term, seems to be most fans' first pick for the position.
Nélson Semedo – Benfica – 3.5
United's interest in Benfica right-back Semedo was first reported back in December, when the Red Devils were linked with a double January swoop for both Lindelöf and the Portuguese international.
Of course that didn't happen, as Mourinho elected to keep his powder dry during the mid-season window.
Bayern Munich and Barcelona were thought to have shown the strongest interest in Semedo in the interim, but A Bola reported last week that United are readying a €35million offer for the 23-year-old – although Benfica are said to want €40million for the athletic an attack-minded full-back.
With Matteo Darmian's future in doubt and Antonio Valencia turning 32 before the start of next season, Mourinho's reported interest in a new right-back makes a certain amount of sense.
The Semedo rumour is one worth keeping a eye on.