Judging by his latest rant, it has been brewing for some time. He was not even asked a particularly provocative question but a fairly bland half-volley about how important a tie with Manchester United in the quarter-final was, unleashed a torrent.

"I think for us every game, every trophy is really important. I have been manager for 26 years, I have won the Fifa Club World Cup, the Champions League, FA Cup, a lot of trophies and I'm really a little bit disappointed with some fans, a group of fans singing and I think they are not making any favour to the team,” he said to the BBC.

"They have to support the team instead of wasting time doing banners or singing songs. What they have to do is support the team and create a good atmosphere in Stamford Bridge. If they continue singing and talking and talking then I think they are not making any favours,” Benitez added. 

Then he turned his cross-hairs to the board:

"They gave me the title of interim manager, it's a massive mistake. I am the manager and I will manage the team until the end, every single minute.

"If they want to carry on wasting time with these things because they have an agenda, they have to take responsibility if something is wrong.”