The Saints are expected to return with a third bid but the 23-year-old has insisted that his future is at Parkhead.
"I'm very happy. I'm back playing now and scored at the weekend. It was good to be back in the team," Hooper told the club's official website.
"I don't want to go anywhere. I'm a Celtic player and very happy here, winning games for Celtic and we're two points clear at the top of the league just now.
"I'm just focusing on football, training, playing and scoring goals. That's my job."
The Bhoys paid Scunthorpe United £2.4m for Hooper in 2010.