The ex-Tottenham midfielder has high praise for both the playmaker and his manager.
Former Tottenham Hotspur midfielder Jamie Redknapp believes Mauricio Pochettino has transformed Mousa Dembele from a potential waste of talent into a 'magical' player, according to his regular column in the Daily Mail.
Indeed, 28-year-old Dembele impressed once again during Sunday afternoon's north London derby as Tottenham earned a 1-1 draw at Arsenal that could well have been more.
And Redknapp is delighted with the Belgian's current form, especially considering his past tendency to flatter to deceive.
Redknapp told the Mail: "Magical Mousa Dembele. The first time I watched Mousa Dembele at Fulham I thought, 'This guy can play'. He had everything - pace, power, he could shoot.
"Then he went to Tottenham and I don't know what happened. He never really got hold of the game, always flattered to deceive and I thought he was going to waste his talent.
"Now, Mauricio Pochettino has got him fit, aggressive and playing very well. That's credit to Pochettino and I always judge a manager on how much they can improve a player."
Pochettino hasn't always had it easy with Dembele, of course. Last season, the Belgian looked below par and it was easy to place him in the same category as Etienne Capoue - in that their Tottenham futures looked in doubt.
But the 28-year-old has improved his fitness this season, which could well have a lot do with his manager, and now looks a superior player.
Consistency has always been the issue for Dembele but, at this moment in time, the Spurs playmaker is consistently delivering. How long can Tottenham stay unbeaten while the likes of Dembele, Dele Alli, Eric Dier, Harry Kane, Toby Alderweireld and more stay on top of their game?