Owls skipper Glenn Loovens is tipping Bolton Wanderers boss Neil Lennon to manage in the Premier League one day.
Lennon took over Bolton in October after Dougie Freedman was sacked and has guided the club out of the Championship relegation zone into 16th position.
When Lennon was in charge of Celtic, Loovens played under the Northern Irishman for two and a half years.
The Dutch centre-back has warned his Owls teammates to expect Lennon’s Bolton side to give them a much sterner test than when the two clubs last met in September in a goalless draw at the Macron Stadium which Wednesday dominated for long periods.
“It will be a different game,” said Loovens. “Bolton have picked up a lot of points lately and I know the manager well.
“I know what he is like and he will have them fired up like he does for every game. He won’t let people slack off and will be right on their toes.
“He did a terrific job at Celtic and at Bolton. I don’t see any reason why he can’t manage in the top flight.
“I think Neil is happy at the moment where he is and I’m sure he will get Bolton going again.”
Lennon spent just over four seasons managing Celtic, having served his apprenticeship under Gordon Strachan.
Loovens, out of contract at the end of the season, said: “When Neil took over from Gordon, you could see he played under great managers and I think he picked up a lot from them and brought it into his management. He got the best out of the players every week.
“He did very well at Celtic, he knows his stuff and has that ruthless streak that managers need. He has clearly done a very good job with Bolton and made them hard to beat – they haven’t lost many games since Neil came in.
“But we are concentrating on ourselves, we are in good form, and we want another win to continue the run.”