The 51-year-old has also slated Jose Mourinho following the 3-1 defeat against Liverpool as he claims the Special One doesn't know what he's doing anymore.
The defeat against the Reds leaves the Red Devils 11 points off the top four, and 19 points behind Jurgen Klopp's men at the top of the Premier League table.
And the fan favourite at Old Trafford believes things urgently need to change at United as he states the whole club is a mess.
Paddy Power ambassador Ince told the betting company: "Jose Mourinho missed obvious mistakes against Liverpool, I’m not sure what he’s doing anymore.
"Where do I start with that Man United performance against Liverpool? The players were awful and the tactics were even worse.
"It baffles me that Jose Mourinho, Michael Carrick and the rest of the staff failed to miss obvious mistakes.
"Andrew Robertson was getting so much joy down the left-hand side in the second half, and I was thinking, surely, they can see that?
"Mourinho, for all the tactical genius he’s supposed to be, somehow managed to miss it. It worries me that it’s not clear what the coaching staff and Mourinho are doing."
Before adding: "A resounding issue at the club is that there are far too many players who aren’t fit to wear the shirt. Something has got to give.
"I’m not one to call for Jose Mourinho’s head, but something urgently needs to change. The board need to decide whether they’re going to pay him off or give him more money for players.
"The other option is to just scrap it all and start again. From a football point of view, the whole club is a mess."
Ince also went on to criticise Jesse Lingard, as he said: "He’s a prime example of everything that’s wrong at Man United."
Gary Neville has also stuck the knife into Mourinho as he insisted that it's surely only a matter of time before he gets the sack.
Paul Ince was speaking exclusively to Paddy Power News. To read more, visit news.paddypower.com
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