The midfielder left Sunderland for Borussia Dortmund over the summer, though has battled to settle in German football.
Bellingham has been linked with Manchester United, but Wyness sees a return to Sunderland the more likely option.
He explained to Football Insider: "I don't see Bellingham to Man United going anywhere. The only thing that I’m hearing that could possibly happen is a loan back to Sunderland.
"That might make the most sense of all. It's where he’d feel comfortable and try and get things back on track. He's not had the best start to the season, and I think that would make sense for him and for Sunderland.
"They're an attractive team right now, and the manager is doing a great job; the owner is doing well. It's an encouraging start for them. Bellingham might do well to come back to somewhere he's well received and get the confidence of playing Premier League football in a decent set-up.
"That's what I’m hearing is a potential loan move back to Sunderland rather than anything like Man United, where I don’t think he’s the right fit there at all."