The Ghanaian has penned a four-year-deal with Levante whom he impressed last season with his 10 goals in 33 appearances across all competitions for Moreirense.
The Frogs are making a return to the La Liga having clinched the 2016-17 Segunda Division title.
¡A punto de empezar la presentación de Boateng! pic.twitter.com/niUQjrPdNh— Levante UD (@LevanteUD) August 17, 2017
Boateng, 21, was officially unveiled at the Estadio Ciutat de Valencia on Thursday.
He represented Black Satellites at the 2015 FIFA U20 World Cup hosted in New Zealand and is yet to be capped by the Black Stars.