The two men have a renowned dislike of each other following their time together at Inter Milan.
Rafa Benitez was taking over a Jose Mourinho side which previously won a famous treble, and former Italian international defender Marco Materazzi didn’t take to Benitez’s new ideas.
The former Italian defender started the feud, described Bentiez’s methods to being at a school and blasted his character as weak, adding:
"If I was a club president, I'd never employ him. A great boss like Marcello Lippi or Mourinho knows how to get their demands across to a dressing room. Whereas Benítez, well he wanted to put them all in writing, 10 or 12 rules, like the Highway Code or being at school.
"At Inter's training centre there were photos on the wall of all the most successful past coaches, from Helenio Herrera to Roberto Mancini and Mourinho. Benítez had the ones of José taken down. With that gesture, he showed his character: that of a weak person."
Rafa Benitez reacted angrily to the claims, calling Materazzi a ‘lair’ on many occasions – including the story about the pictures.
The former Chelsea and Liverpool boss is now back in Serie A with Napoli. The Naples-based side are currently third in the table, three points ahead of Fiorentina as they attempt to finish the season in the Champions League spots for next season.
However, Rafa’s side have struggled over the past few games – taking just two points from a possible nine. Sunday’s fixture against midtable Atalanta ended in disaster – as Napoli were crushed 3-0 with star players Gonzalo Higuain and Marek Hamsik on the substitute’s bench.
Following the match, Marco Materrazi reportedly took to his twitter account to fire another insult in the direction of his former boss, saying:
"The same tactics, the same methods, the same bootlicking… They are starting to get to know you. Better late than never."
We can all expect this feud to continue well into the future.