Benfica welcome Real Madrid to the iconic Estadio da Luz on Tuesday evening as the side aim to repeat their stunning 4-2 victory earlier this season.
Mourinho, who amassed 17 trophies in those eight years, but just nine in the 16 years since with Madrid, returns to his old side in what should be a thrilling clash.
Now, speaking NewBettingSites.uk, Nevin has opened up on Mourinho he believes would find it hard to return to Madrid if he got the call.
"You wouldn't be shocked if Jose Mourinho went back to Real Madrid and made them winners again but here's the thing, in that Benfica game, the camera was on Jose to give him more close-ups than the goalscorers, and something looked totally different about him to me.
"It was really weird. I was thinking to myself, is this a current picture of Jose? He looks 10 years younger. He looked absolutely brilliant. He looks back on the ball, looking sharp. He looked like himself again.
"It doesn’t look like a caricature with Jose now. It looks to me like he’s a manager again with serious intent. I think he’s got his mojo back, and that’s fantastic to see.
"The Benfica job is probably good for him, but nobody turns down Real Madrid. Nobody. That's just the way it is. So if they did come in for him again, I kind of hope for the Benfica fans, I hope generally even for Jose, that if it comes, then it comes at the end of the season and he’s given certain guarantees.
"Let’s be honest, it would make most of us smile, wouldn’t it? It’d be great to see him do it all again for them, just for the drama."
Mourinho will push a potential return to Los Blancos to the back of his mind as his side try to keep composure in front of the home crowd who will hope for another thrashing of the Spanish giants.