The striker has completed a £3m switch to Hillsborough after a successful loan spell.
The 27-year-old has reportedly completed a £3m move from Premier League side Norwich City (via Yorkshire Post), after Hooper shone during a recent loan spell with Carlos Carvalhal's men. And speaking before the striker completed his switch, Bannan explained that Wednesday's hopes of securing a place in the Premier League would depend on whether they re-signed the forward on a permanent basis or not.
"I think it would be massive for the club," he said, as reported by the Yorkshire Post.
"What Hoops would bring is important goals at important times. I think if you want to make the play-offs and go up in this league, you need a striker that is going to score the goals like he got at the weekend."
After a slow start to his loan spell, Hooper proved how lethal he could be with six goals in his last six games for the Owls. His two most recent performances were hugely impressive, as he bagged two goals and an assist in the narrow victory over Bolton, before grabbing another brace during the win against Leeds.
The victory over Steve Evans' men sent Wednesday into the division's top six for the first time, and helped them continue a run that has seen them win five of their last six league fixtures - their only defeat in that run came away to league leaders Middlesbrough.
And Carvalhal will know that a continuation of that run should see his side remain right in the promotion picture, and having Hooper on board permanently will certainly improve their chances of doing just that.