Defender Winston Reid has signed a new long-term contract with West Ham which commits him until the summer of 2021.
Blackburn have signed defender Doneil Henry on a month's loan from West Ham.
The 39-year-old will provide cover to England international John Ruddy, who had been a target for Chelsea, and Mark Bunn.
Norwich had needed back-up after Jed Steer left for Aston Villa and Declan Rudd was loaned out to Preston.
Manager Chris Hughton said: "It is now important to us to bring in a 'keeper of great experience and a player that is used to living life in the Premier League.
"The move also allows us to send Declan Rudd out on an extremely valuable season-long loan to Preston where he can get some first-team football under his belt."