The Manchester Evening News says United expect to make Paul Pogba their first major summer signing.
Pogba is out of contract at the end of the season - sparking a scramble among Europe's biggest clubs for his signature.
Italian giants Juventus looked set to lure him to Serie A until Ferguson stepped in.
The United manager has convinced Pogba and his agent Mino Raiola that the 19-year-old will become a key figure for the Premier League champions.
A contract has been agreed in principal and United hope to announce a four-year deal as early as this week.