The day after the first denunciations made by Francisco J. Marques Benfica used the official website to deny the allegations.
Here is the statement:
“Sport Lisboa e Benfica condemns and denounces the false and absurd insinuations of the FCP director of communication and proceeds to the corresponding criminal defamation process, as well as to other cases that may be justified. Those insinuations are done to deviate the attention from the crisis that other institutions are facing nowadays. Benfica repudiates and vehemently denies the false and absurd insinuations of the communication director.”
Now it looks like the charges are not fake, as you can see here.