The prolific striker is being linked with a summer move to England with a number of clubs including Southampton, Norwich City and Hull City on the radar but Bankier is not accepting that he will definitely depart.
"We are not resigned to losing him. It's very much up to him what he wants to do. At the moment that's unconfirmed," said Bankier.
Celtic recently rejected a £4million offer from Hull for Hooper who is entering the final 12 months of his contract at Parkhead.