As was the case last summer, they're saying we want Chatzidiakos again. Don't know how realistic that is considering he's been with Copenhagen for only a season. Though I'll note that last season didn't seem to go too well for them, as they ended up (barely) in the bottom half of the table. But, confusingly, still managed a conference league spot for this summer.
https://www.transfermarkt.us/pantelis-hatzidiakos/profil/spieler/144244
Tbh I doubt he'd be too expensive. Age isn't terrible as well, and we obviously need a replacement for Kedziora (and I generally support actually having Greeks on the roster).