Blackburn boss Sam Allardyce believes nothing is out of reach for Manchester City if manager Roberto Mancini succeeds in getting the best out of his players.
The teams meet on Saturday at Eastlands, with big-spending City looking for their second win of the Barclays Premier League season after amassing only four points from three matches so far.
But the Rovers boss said: "You can buy a league now, obviously Blackburn have proven that, Chelsea have proven that, and you can do it in a short period of time. If you manage the players right and get that team spirit right, then you'll win anything."
Mancini's biggest challenge remains gelling his expensive recruits into a team capable of winning trophies.
New Blackburn signing Benjani Mwaruwari, who was released by City this summer, was critical of his former club last week, claiming there is no trust and that some of the players are motivated primarily by money.
Allardyce added: "Those are his (Benjani's) words and he's been in the middle of it. If that is the case then as a manager you've got to take control of that and make sure it reverses into a thriving football club of great quality.
"If he (Mancini) gets it right, as Jose got it right for Chelsea after the huge amount of spending that Roman (Abramovich) did, and if you look back here with Kenny (Dalglish), he got it right and Blackburn won the Premier League."