Spurs boss Andre Villas-Boas watched the ex-Scunthorpe striker in action last night but it was the Canaries' latest offer that was occupying the mind of the Celtic boss before kick-off.
Hooper has turned down a contract offer from the Glasgow club but manager Neil Lennon remains confident he will still be at Parkhead on February 1.
He told BBC Radio Scotland's Sportsound programme: "We have had an improved offer, if you want to call it an improved offer, from Norwich that's been turned down automatically."
Lennon said it was not much more than the original figure which may indicate that the second bid was merely structured differently.
When asked if it was £6million, Lennon said: "It was nowhere near six million. It was completely rejected and even if it was six million it would be completely rejected."
Lennon claimed little had changed with the situation of the striker, who has 18 months left on his current terms and rejected the club's improved contract offer in October.
"I'm disappointed again that these things have come out in public," he added.
"I'm not too sure where they are coming from but it's certainly not us.
"It's as you were. He didn't like the look of the contract two or three months ago and nothing has changed.
"We feel it's a very good offer. It would put him in the top two or three highest-paid players at the club. I'm sure he wants to be the highest paid but you can't always get what you want."