Benfica president Luiz Felipe Vieira is in London today for transfer talks with Manchester United.
A Bola says Benfica are hoping to sign a United player.
United's third-choice Joel Pereira is reportedly their top target.
Pereira spent the first half of this season on loan at Benfica's city rivals Belenenses.
The 20-year-old made his United debut as a substitute in the FA Cup fourth-round win against Wigan.