Red Devils boss Ole Gunnar Solskjaer is looking to bring in upgrades in several key positions in the summer window.
That includes in defence, with a new partner required for Harry Maguire and quality competition also needed for right-back Aaron Wan-Bissaka.
United have also taken to attempting to sign the top young talents in Europe, players such as Amad, as they also look to build for the future.
Here, Mirror Football rounds up the latest Manchester United transfer news…
Trippier bid rejected
Kieran Trippier has emerged as one of Manchester United’s main targets for the summer transfer window.
The Red Devils are looking to provide competition to current first-choice Aaron Wan-Bissaka, after seeing the positive impact the signing of Alex Telles has had on Luke Shaw.
Trippier would also provide United boss Ole Gunnar Solskjaer with a more attacking option in the right-back position.
The Englishman has impressed at Atletico Madrid, becoming Diego Simeone’s first-choice right-back as they won La Liga.
But United appear to have suffered a blow in their pursuit of the 30-year-old after reportedly seeing their opening bid rejected.
The news website claims that the Red Devils offered in the region of £10million for the England international.
United dealt Moriba blow
Highly-rated Barcelona youngster Ilaix Moriba has dealt Manchester United a serious blow in their hopes of signing the midfielder.
Moriba has impressed for Ronald Koeman’s side since being promoted from their academy and is seen as one of their rising stars.
But the Spaniard is entering the final year of his contract at the Nou Camp, attracting the attention of United.
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In a boost to Barca though, La Vanguardia report that Moriba is set to reject a move to Manchester and instead sign a new contract with the La Liga side.
They state that the Catalan club have already moved to extend Moriba’s stay in Barcelona and are set to thrash out a deal in a meeting next week.
It is believed he will sign a three-year deal and will become a permanent member of the first-team, potentially taking the place that would have been filled by Gini Wijnaldum had he joined the club.
Madrid give Varane boost
One of the main areas that Ole Gunnar Solskjaer wants to upgrade in ahead of next season is at centre-back.
Eric Bailly and Victor Lindelof have failed to prove they can be quality partners for Harry Maguire in the long-term.
With that in mind, United have made Raphael Varane one of their top targets this summer, with the Frenchman ready to leave the Bernabeu.
Varane has become one of the world’s best defenders during his time with Madrid, but is refusing to sign a new contract, with his current deal expiring next year.
Los Blancos are keen to cash in on the 28-year-old, but had slapped a £60million valuation on the defender.
But with United failing to bite on that hefty price, Mundo Deportivo report that Madrid have now slashed that figure to a figure in the region of £43m.