Sunderland have been in freefall the last few seasons, with what used to be a club that was synonymous with having Premier League status, the Black Cats began to tumble down the divisions and last year were relegated to the third tier of English football.The club are currently doing quite well in League One, sitting in third position, but what happened prior to this has unfortunately captured the headlines.The 2017/18 season - in which Sunderland succumbed to their second successive relegation - was caught on camera in the form of a Netflix original documentary.Ironically, filming commenced back in July 2017, with the expectation that Sunderland would bounce straight back up to the Premier League.Despite the complete opposite occurring, a gripping narrative - although for different reasons - still remained.The documentary comprised of eight episodes all being released on Netflix on December 14th 2018.

The club captain at the time of filming, John O'Shea, has voiced his opinion on the documentary to BBC Radio 5 Live, per JOE and admitted the general consensus amongst the squad was not positive.

"From my point of view and I think 99% of the players didn't want it to happen.

"It's one of those things, you go in in the morning for some treatment or whenever and then you realise there are mini camera's dotted around," O'Shea added.

"I haven't watched all of it, why would I? I've lived through it."

O'Shea has returned to the Championship after signing for Reading in the summer, but will no doubt never forget the season where his and his players life were under the microscope more than ever.

With Manchester City's Netflix documentary, All or Nothing, also gaining critical acclaim could this be the future of professional football?

In ten years time, will it be easier to pick out the teams that haven't had an in-house documentary?