Real Madrid have reportedly offered Manchester United first refusal on Gareth Bale, Toni Kroos and Luka Modric providing that Los Blancos are kept informed about three Red Devils players.
United goalkeeper David de Gea is one of the players that Real are believed to be monitoring, while Bale is said to remain on the Old Trafford club's radar.
According to the Manchester Evening News, the La Liga giants are also interested in midfielder Paul Pogba and forward Anthony Martial and are hoping to be made aware of any potential deals.
The report claims that Real are aware of United's long-standing admiration for Bale and desire to sign two central midfielders ahead of next season, hence the potential offers of Kroos and Modric.
Michael Carrick is set to retire this summer, while Marouane Fellaini sees his contract expire at the end of the season.