Neymar could leave Paris Saint-Germain, while Real Madrid want Eden Hazard.
United completed its deals early in the transfer window.
United has made a fine start to the season.
Former Manchester United star Neville was a fierce critic of Liverpool during his playing career.
Sanchez and Raheem Sterling could swap clubs.
Liverpool will activate Keita's release clause next summer.
Arsene Wenger's side has three points from two Premier League games.
Coutinho has been the subject of £100 million-plus offers from Barcelona.
The central defender from Colombia has impressed for Ajax.
Mourinho has made three signings so far this summer.
Liverpool plays Hoffenheim in a qualifying match on Tuesday evening.
Ivan Perisic may finally be happening.
The Everton forward looked set for the west London club only days ago.
Monaco has built a team that is the envy of Europe.
The 18-year-old's development could stall at the Bernabeu.
The full back could be the key to shoring up the Red Devils' back line for for years to come.
The midfielder is reportedly on Manchester United's radar.
United has to reinforce ahead of a Champions League campaign.
The Brazilian wants his countryman to join him in Spain.
Mourinho may shop abroad this summer.
Wenger could be staying on at Emirates Stadium.
The winter transfer window closes on Tuesday.
Antoine Griezmann is a summer 2017 target.