Birmingham manager Alex McLeish has been promised up to £40m to spend on players in the January transfer window by the club's new owner Carson Yeung.
The Hong Kong billionaire made the announcement at his first media conference at St Andrew's since completing his £81.5m takeover.
"My first plan is to support the club for about £20-£40m for players and wages in January," said Yeung.
"I want to make Birmingham City as big as possible and will support Alex."
And McLeish earlier insisted he will have the final say on those transfer targets.
"Will I have the final decision on team selection and transfer targets? Yes, it will be down to me," said the Scot.
"That is the normal remit of a manager and we will be working that way."
McLeish excited by transfer kitty
Yeung added: "I will be supporting the manager. We have an excellent management team.
"Our aim is to work hard to secure our position in the Premier League, not only for this year but for many years to come.
"It's a long, long target but we hope Birmingham can become one of the best clubs in Europe. Let's take it step by step - but why not?
"Birmingham can become as big as possible. We are competitors for Aston Villa.
"In the short term I just care about January. But in the future there will be more money, and longer term we believe there is a major opportunity to build Birmingham's fan base in China and to generate new sources of revenue for the club.
"This season we want to stay in the Premier League, and next season be stronger with new players and get better results on the pitch.
"I hope to win a trophy in two more years. I will invest step-by-step to ensure the team lifts a cup, and make the stadium excellent."
Former England midfielder Steve McManaman is an executive director of Yeung's company Grandtop International Holdings and Yeung's right-hand man Sammy Yu is a former manager of Hong Kong.
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