The Canaries swapped Steve Morison for Leeds' Luciano Becchio in the morning and signed Kei Kamara but continued to pursue Celtic's Hooper, for whom they have made a number of offers.
Reports surfaced in the evening that they may have made another, but Celtic manager Neil Lennon took to Twitter to shut them down, writing: "Contrary to reports there have been no fresh bids for Gary and even if there are they will be rejected..he is NOT for sale."
Despite seemingly missing out on Hooper, Norwich have signed a player in Becchio who has 19 Championship goals to his name this season and who cannot wait to test himself in the top flight.
City manager Chris Hughton has been keen to bolster his attacking options to avoid being dragged into a dogfight for survival and had already moved to bring in Kamara on loan from Major League Soccer club Sporting Kansas City, subject to the Sierra Leone international receiving a work permit.
Becchio will offer much-needed back-up to Norwich captain Grant Holt and the 29-year-old former Boca Juniors player feels he is ready to make the step up to the challenges of the English top flight.
"Finally everything is closed. I wanted to come to Norwich, and my family did also. It is a great opportunity for me," Becchio told Canaries Player.
"The Premier League has a massive following and is the best league.
"I want to get into the team quickly if I can, I am ready."
Becchio has agreed a three-and-a-half year deal with the Canaries while Kamara is on loan until May 6 with an option to buy.