The striker is yet to feature for Wolves’ first-team this season, having last appeared for Nuno Espirito Santo’s side in November 2018.
A loan move at Nottingham Forest followed last winter and now the Brazilian heads to the top tier Portugal, where the season is three games in.
Bonatini has 54 Wolves appearances to his name and 13 goals, 12 of which came in the club’s Championship-winning season of 2017/18.
Wolves would like to wish Leo the very best of luck for the upcoming season.