Former Manchester United defender turned pundit Gary Neville has been discussing Chelsea's manager model.
The Blues recently made their latest managerial change, swapping Frank Lampard for Thomas Tuchel in late January, a move that seems to have paid off so far.
Chelsea are now unbeaten in nine games across competitions and sitting on the edge of the top four ahead of a clash with second-placed Manchester United on Sunday.
And ahead of that game, former United defender Neville has spoken about the managerial model at Chelsea and why managers or head coaches don't seem to have a long shelflife at Stamford Bridge.
"Players almost need a new idea after 18 months, particularly at Chelsea, we know what happens there," said Neville on the Webby and O'Neill Channel.
"I think he will make them better, he will improve them but Chelsea are trigger happy. They don't give that two or three years to prove whether you have the idea that the owners want.
"They want results straight away. The manager knows what he wants to do, he has a new system with the wing-backs.
"They look better, but it will be a big test against us."
Neville also spoke about Chelsea's decision to give newest head coach Tuchel a contract only 18 months in length.
"Eighteen months is the maximum he will get anyway," he added. "(Antonio) Conte came in and he knew how long he would be there.
"He won the league, started kicking off and got himself out, did it on his own terms so his reputation was left intact.
"Chelsea have been successful and every club has a model.
"At Salford, our managers get 2-3 years. The first managers we appointed had two-and-a-half years, Graham (Alexander) had two-and-a-quarter years. That's the model of our club.
"I think Manchester United should be 2-4 years, but at Chelsea, it has always been a year or two years maximum.
"That's the model and it is at a lot of clubs."
