The Portuguese giants have expressed an interest in taking the inexperienced Brazilian on a season-long deal next term and he believes that it would be good for his development
The full-back has struggled to hold down a place at Old Trafford since a 2008 move from Fluminese and is eager to force his way into Sir Alex Ferguson's plans.
"I know Benfica, we watch many of their games in Brazil. In fact, everyone in Brazil follows Benfica's games - it is a good club and would be very good for me, no doubt," he told Maisfutebol.
Despite talks having taken place, Fabio insists that no deal has been agreed as of yet, saying: "I will definitely know my future at the end of the season.
"For now I know that people are talking, but nothing is certain. I have not talked with anyone from Benfica, I am waiting for everything to be right."
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"I have a Portuguese passport, and speak the same language. The adjustment would be easy. There would be no problems, I think," he continued.
"Portugal would be a good solution for me. I follow some of the league and I know Portuguese teams, because they are always good in European competition."
Despite the positives surrounding Benfica's interest, the move would see Fabio separated from his twin brother Rafael for the first time in his career.
"It will be difficult," the youngster admitted.
"We are never going to be separate, but this is football, one day it has to happen. Sooner or later this would happen because in football it is not easy being side by side forever."