The 19-year-old talent admitted that it is a dream come true to play in the Premier League and with a 'big club'.
"I am very happy to be here and am proud to have the possibility of playing for a club like West Ham," he said.
"I was happy to move to
Savio may make his debut for the Hammers in tomorrow night's match against
"I will try to do my best to improve and help the team to get better. I know it's a big responsibility but I think I know what I can do and I'm happy for that and that's it.
"I see myself that I hope I can help us. I have to improve a lot and I will try to improve and get better in training every day."