Manchester United midfielder Anderson is reportedly on the verge of a summer exit from the club.
The Brazilian has had little game time at Old Trafford this season and is keen to move to strengthen his chance of gaining a place in the national squad ahead of next year's World Cup, according to Goal.com.
It is believed that United would be willing to allow the 24-year-old a loan back to Porto, from whom manager Sir Alex Ferguson signed him in 2007.
However, a host of South American clubs are said to be interested in making a permanent deal with United.
