Arsenal midfielder Kelechi Nwakali will spend next season on loan at Porto.
Nigerian-born Nwakali, 20, joined the Gunners during the summer of 2016 and was sent on loan to Dutch side MVV Maastricht.
Nwakali remained in Holland last season with a loan spell at Eredivisie side VVV Venlo.
Arsenal confirmed the move in a short statement on Thursday.
Speaking to the Porto official website, Nwakali intends to make the most of his opportunity.
My main goal is to develop, improve my qualities and the other aspects I know I need to correct to grow in the way I play.
I think FC Porto is the right place to evolve as a player. There are good players, young people, and I think I’ll grow up here.”