The Portuguese attacker currently plays for Chelsea, and Benfica is in talks with the London team to negotiate a deal.
Rui Costa believes it would be a positive move for fans if Joao Felix were to return to Benfica.
He stated that fans would be happy to see a player of Joao's quality and stature come back to the club where he started his career.
However, Rui Costa also acknowledged that the financial aspects of such a deal would be significant, involving high transfer fees and salaries.
