He shouldn't be voicing his opinion publicly and putting any pressure on the club when it comes to the decision. I can see the headline now:
"Crows snub Sloane who wanted to remain captain"
I haven't listened to the interview so I don't have the context here, but if he was asked about it any answer other than "yes I would like to continue as captain" would have immediately become a headline anyway.
If the club do move to a new captain, his final job in the role will be to immediately endorse the new captain and the process to quell any of those kinds of stories.