Carragher played under Benitez and won Champions League for Liverpool. After the humiliating results from recent matches, Newcastle appointed Benitez to save their Premier League position next year.
Former Liverpool player Carragher said with the Sky Sports: I think for Newcastle, it’s a fantastic appointment to get a manager of that calibre,”
“I think over the last decade, you’d have to go back to Bobby Robson [to find someone] who has won that many honours.
“These next 10 games – if he can get through those, then over the next three years he could be the man that stops that rot of trophies. He’s won so many trophies in his career.
“The fans shouldn’t be concerned, not at all. For any Newcastle fan, forget the next three years, focus on the next 10 games.
“If you’re a fan and Newcastle went down, you wouldn’t want Rafa, you’d want someone that has experience in that league and has success in that league. Rafa won’t want to be there.
“It works perfectly for both parties; if he keeps them up, it’ll be a great appointment over the next three or four years and hopefully he can get Newcastle back up the table. I think the next 10 games are all that matters for everyone involved.”
He added: “I can’t remember ever seeing Rafa at this end of the table,”
“That’s why I’m interested in seeing how he goes about it. That’s why I’m interested in seeing how he manages, how he prepares his players.
“Motivation? That’s not Rafa’s biggest strength. He will look at how they suffer tactically. Rafa was probably the best I had with setting up a back four. There’s probably going to be a lot of repetition and he won’t apologise for that.
“Those players will work hard – whoever they’re playing, it will be a difficult game for them. It won’t be the open expansive style the fans want, for now he will be focusing on trying to make Newcastle difficult to beat.”