The Spaniard revealed he will leave Stamford Bridge at the end of the season but has hit out at the club's supporters for their vocal opposition to his appointment
His time with the Blues is officially approaching the end.
"At the end of the season I will leave, they don't have to worry about me," Benitez said during a post-match interview following Chelsea's 2-0 win over Middlesbrough on Wednesday. "They have to concentrate on supporting the team, that's what they have to do."
The Spaniard delivered the astonishing tirade after witnessing the traveling Blues support chanting "Rafa Benitez, we know what you are" as his side booked a place in the FA Cup quarterfinals.
Benitez has the worst winning percentage of any Chelsea manager in the Roman Abramovich era, and has been hugely unpopular with the fans since replacing club legend Roberto Di Matteo in November.
"I'm a little bit disappointed with a group of fans singing, and I think they are not doing any favors for the team," he said.
"They have to support the team instead of wasting time making banners and singing songs, and create a good atmosphere at Stamford Bridge."
Chelsea fans were unhappy with the decision to get rid of Di Matteo, who led the club to a Champions League title last season after taking over for the sacked Andre Villas-Boas in March. Benitez was hired early this season on an interim basis.
"They gave me the title of 'interim manager.' It's a massive mistake. I'm the manager, and I will manage the team until the end, every single minute," he said.
"If they want to carry on wasting time because they have an agenda, they have to accept responsibility when something is wrong.
"It's not just 'We blame this one or that one'. They have to support the team. If we stick together, we can achieve what we want to achieve - the Champions League. If not, they can carry on singing but it will be in the Europa League."