/https%3A%2F%2Fsportsmole-media-prod.s3.gra.io.cloud.ovh.net%2F18%2F24%2Flondon-stadium.jpg "West Ham complete Goncalo Cardoso signing from Boavista")
West Ham have signed teenage centre-back Goncalo Cardoso from Boavista.
The 18-year-old has joined the Hammers on a five-year contract for a reported fee in the region of £2.7million.
Cardosa, who becomes the club's fifth signing of the summer, played 15 times for the Portuguese side last season after making his debut in October.
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West Ham United
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Boavista
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