Manchester United boss Jose Mourinho admits he needs years to impose his own methods and style at the club.
The 53-year-old has taken over from Louis van Gaal in the summer and agrees with the Dutchman that changing things around at United is a lengthy process.
In 2014, van Gaal said: "We are in a process and that process shall take more than one year, it shall take three years."
And Mourinho believes he needs the same amount of time as he explained to MUTV: "Of course [it is still a work in progress], this is a process of years, not a process even of months.
"But you can change things and improve things like I think we have done.
"We've played a few matches already where you could feel the differences in the style, differences in the approach and differences in the intensity.
"Even in the difficult week where we had bad results and defeats, in these matches we saw, not with consistency, a few very interesting things.
"For example, the way we played in the second half against Manchester City and Watford. In every match, we try to improve but, without the results, it's difficult to persuade people that we are in a process."
Ahead of today's game he added: "The more I see them [Leicester City] and the more I analyse them, the more I understand why they were champions.
"It's very difficult to score goals against them; it's difficult to keep clean sheets against them, so we know that it will be a very difficult match for us."
"That said, we know it will be a difficult for match for Leicester also. Even the teams that beat us recently had a really tough game against us; it was very difficult for Man City to beat Man United; it was very difficult for Feyenoord to beat Man United and it was very difficult for Watford to beat Man United. We know both sides will find it tough."