Manchester United manager, Ole Gunnar Solskjaer, is targeting at least one signing in every area of his squad this summer, ESPN reports.
Solskjaer, speaking after their Champions League exit to Barcelona on Tuesday night, said he is facing a "rebuild" at Old Trafford before United again challenge for top trophies.
It is believed he will strengthen each area of his team, with two new defenders, two midfielders and a forward.
United usually work towards a plan of signing three players during the summer but with more players than usual expected to leave, Solskjaer is set to get special dispensation to bring in more targets.
There is interest in Napoli defender Kalidou Koulibaly, Real Madrid centre-back Raphael Varane, Atletico Madrid midfielder Saul Niguez as well as young English trio Declan Rice, Aaron Wan-Bissaka and Jadon Sancho.