Diego Moreira has landed in the UK as the winger prepares to join up with Chelsea.
The 18-year-old joined the Blues on a free transfer from Benfica earlier this summer and is preparing to pick up his work permit after playing for Portugal U21s in the recent European Championships.
It is unclear if the winger will play any part in Chelsea’s pre-season tour of the United States as Mauricio Pochettino runs the rule over his squad.
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Moreira is likely to spend the season with the club’s U21 team as the club continue to strengthen.
Chelsea have also signed left-back Ishe Samuels-Smith from Everton and Norwich midfielder Alex Matos on long-term contracts.
Dubbed a “defensive animal” by former coach Luis Castro, Moreira made two appearances for the Lisbon giants last season.
Castro told Mais Futebol in April: “He has improved a lot. He has this street football style, but it is increasingly productive.
“He is managing to reconcile being entertaining, because he brings spectacle to the game, with better statistics. And he has a very particular characteristic, which is not normal for a player of his talents, which is the defensive component.
“He’s a defensive animal and I don’t see many wingers worldwide with Diego Moreira’s defensive commitment.”