A Barcelona emissary attended the FC Porto-Estoril match at the Estádio do Dragão on Saturday to observe 18-year-old Jordan Arnolin. The young central defender made his first start for Estoril in the game, playing as a defensive midfielder. It is said that this versatility has interested the Catalan club. Barcelona, where João Amaral is the chief scout, has been following Arnolin's progress since his first cap for Portugal's U18 national team. The player has since also played for the U19 side. Barcelona is not the only club interested, as Brighton from England and Lille from France are also closely monitoring the defender's development. Lille also had a representative present at the match.