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West Ham sign teenage defender Goncalo Cardosa

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Cardosa has played eight times for Portugal's Under-19s side

West Ham have signed Portugal Under-19s defender Goncalo Cardosa from Boavista for a reported £2.7m.

The 18-year-old centre-back has agreed a five-year contract with the Hammers.

Cardosa played 15 times for Portuguese side Boavista last season and has eight caps for Portugal at Under-19s level.

He is West Ham's fifth g of the summer following the arrivals of striker Sebastien Haller, midfielder Pablo Fornals and goalkeepers Roberto and David Martin.

Find all the latest football transfers on our dedicated page.

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