Richarlison had also been linked with Premier League champions Chelsea and Dutch club Ajax, reports Xinhua news agency.
"(We) thank Richarlison for his dedication and commitment during his 70 games and 19 goals for the club and wish him success in the next stage of his career," Fluminense said in a statement.
Watford are said to be awaiting the approval of a work permit for the 20-year-old before confirming the transfer, which reportedly cost the Hornets around $11 million.
(This story has not been edited by Social News XYZ staff and is auto-generated from a syndicated feed.)
About VDC
Doraiah Chowdary Vundavally is a Software engineer at VTech . He is the news editor of SocialNews.XYZ and Freelance writer-contributes Telugu and English Columns on Films, Politics, and Gossips. He is the primary contributor for South Cinema Section of SocialNews.XYZ. His mission is to help to develop SocialNews.XYZ into a News website that has no bias or judgement towards any.