Hooper feels that Scottish football is not particularly respected in England, but he says that he loved his time north of the border.
The 28-year-old was a prolific scorer at Parkhead, and he claims that representing a giant like the Bhoys was a dream for him.
“I loved my time at Celtic. It was the highlight of my career. Champions League, Europa League, Old Firm games,” Hooper said.
“For a lad who started his career at Grays Athletic it was a dream. The Scottish League doesn’t register in England. I was top scorer three years running up there. I scored against Spartak Moscow, home and away. But apart from that once, the England manager never watched me.”
Hooper spent three years with Celtic, and he became one of their most frequent scorers in modern times.
The former Scunthorpe and Southend man netted 82 goals in 138 appearances for the Bhoys in all competitions, and he was regarded as their main striking hope.
Hooper moved on from Celtic to join Norwich back in 2013, but his career has stalled since then.
Hooper did not show his best form for the Canaries, and he was sold to Sheffield Wednesday back in the January transfer window.
Hooper seems to be finding his feet at Hillsborough again, and he has netted 11 times in 24 matches for Wednesday.