Manchester United manager Alex Ferguson has paid Roberto Mancini a rare compliment ahead of the crucial derby against Manchester City on Monday.
Ferguson, who is famous for playing mind games with his title rivals, said City had reached a new level under Mancini's guidance.
The Italian was appointed City manager in December 2009 and has established the club as a serious title contender with the help of multi-million-pound investment by its Abu Dhabi-based owners.
Many believe Mancini's job will come under threat if City fail to win the title after leading the standings for most of the season, but Ferguson said City was moving in the right direction.
"He (Mancini) is second-top of the league at the moment, with the league decider on Monday," Ferguson said. "That's progress, it's a step forward for them. That's the only way you can measure it."
City can move ahead of United on goal difference with two rounds left by winning on Monday.
Ferguson also drew attention to the fact that City's likely points total would probably have been enough to win the league in most years.
"You look at the points total that both teams probably will amass and it's championship form from both teams," he said. "This is the derby game of all derby games. It's our city rivals and it makes everybody step up a notch in terms of anticipation."
The last time United and City fought it out for the title was in 1968 - also the last time City won the league - but this year is extra-special because the derby comes so close to the end of the season.
"It's a shootout, isn't it?" Ferguson said. "Going into work next Tuesday morning will be the most important day of their lives for both sets of supporters. People are brought up through their grandfathers, their great-grandfathers and grandmothers to what they are.
"You can't change a family's traits. It's steeped in the blood of these supporters."