Our Moroccan international defender had many a battle with Benitez's Valencia side in Spain's La Liga when he was a player at Deportivo La Coruna.
Indeed, both Deportivo and Valencia took on the big guns of Barcelona and Real Madrid with Benitez lifting the championship twice in his three years at Valencia in 2001-02 and again last season.
Noureddine won the title in 1999-2000 as Deportivo finished in the top three for five successive seasons. They were third behind Valencia and Barca last term before both men headed for England.
Injuries have hampered Benitez's first few months at Anfield but the popular belief on Merseyside is that he is the man to bring success back - Sunday's victory against Arsenal proof of what they are capable of.
"For me, he's one of the best coaches in football at the moment," said Noureddine. "He's won lots of things and demonstrated that he is one of the best around.
"That is merited because he did such a great job at Valencia over three or four years and for me, when I was in Spain, he was certainly the best coach there.
"What he needs now is time to implement his systems and his methods.
"It's obviously going to take time for the players to adapt to him and him to adapt to the players but I'm sure he'll succeed with the group of players he has. It's a big club and I'm sure he'll be a success."
Noureddine Naybet has few doubts that his old adversary Rafael Benitez will be a success at Liverpool.