The actress explained that she would like John to rescue her troubled character Fiz, who is currently behind bars awaiting trial for murder after being implicated in her husband's dark crimes.
Last month, reports speculated that John could re-appear for Fiz's trial, turning up to clear his wife's name at the last minute.
Speaking on Loose Women about the possibility of a John Stape return, McAlpine commented: "He's got to, hasn't he? In good soap tradition, the baddie has to have their comeuppance - and he hasn't! It definitely feels unfinished."
However, she added: "I really don't know anything!"
McAlpine also confessed that Fiz may have made a mistake by handing over her baby daughter Hope to Roy and Hayley Cropper.
"It's a good and a bad thing, in my opinion," she said. "First of all, Roy's mother - I'm not happy with that! And Becky has now left [The Rovers] so she's going to be involved. In a way, I don't think [she] thought it through because I think it's going to cause more problems."
Graeme Hawley, who played the role of John, left Coronation Street earlier this year.
Read more about the future of Fiz's storyline:-
> Coronation Street tipped for new John Stape twist
> Coronation Street Fiz tipped for prison drugs plot
> Jennie McAlpine: 'Evidence stacked up against Fiz'
> Coronation Street Fiz 'in prison drugs ring attack'
> Coronation Street Tyrone, Kirk 'to kidnap drug gang leader'
> Coronation Street Becky 'to plot baby kidnap'
Re-live John Stape's dramatic Coronation Street departure in the video below: