The boss admits that his own swearing ban has gone out the window at St. James’ Park.
The Magpies held an inquest after last weekend’s defeat, with them being thoroughly outplayed by the highflying Foxes.
It has been a disappointing season for McClaren’s side so far, with them currently just a point outside of the bottom three.
Newcastle have been criticised for lacking fight on several occasions already in this campaign, with the loss to Claudio Ranieri’s side in particular a low point in that regard.
McClaren, though, has said that was present in training this week, especially after he broke his own swearing ban.
“My swearing went right out of the window,” the Mirror quotes him as saying. “We have had a great week on the training pitch. Feisty, competitive, energetic, all the things we lacked last Saturday.
“It was just what we needed. We explained why we lost. For three days we sorted it out. It is one of those weeks coaches like. We needed it. The energy, that is what we want.”
In some of Newcastle’s bigger defeats this season, it can certainly be argued that they have looked uninterested as a group.
Much of that ire has been aimed at the foreign players in the side, with it being suggested that they do not care as much as their British counterparts.
It was a clear plan by McClaren and the club in the summer to look to Europe again this summer, rather than British talent as they may have done in the past.
So far it has looked like a bad decision on their part, but their manager will be hoping that will quickly change after this week’s training sessions.