Galeno scored 11 goals in 38 appearances for Porto's B team this season, having arrived on loan from Brazilian outfit Gremio Anapolis, reports Xinhua news agency.
The 19-year-old will be tied to the club until 2022 with a release clause of 40 million euros, Porto said in a statement.
Belgian winger Joris Kayembe, 22, has also been promoted to the first-team squad after scoring seven goals in 32 matches for FC Porto B in 2016-17.
Porto are currently second in the Primeira Liga standings, five points behind Benfica with one match remaining in the season.
(This story has not been edited by Social News XYZ staff and is auto-generated from a syndicated feed.)
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