“If we stay up the first year then we will upgrade the stadium. There are a lot of things to do but there is a lot of potential”
But Madejski says he will stick to his original asking price for the club.
"The club is more valuable now, but I've struck a deal, and a deal is a deal," Madejski told BBC Radio Berkshire.
"I've put a lot of money into this football club, which I'm quite happy about. And I hope the Zingarevich family will take Reading on to a different level and into Europe and beyond.
"It's all well getting to the Premier League but you need deep investment to stay there. We've found very pleasant people in the Zingarevichs, who will continue to do things the Reading way. It bodes well for Reading and I hope they will take the club much further.
"I'll be staying on as chairman. If anything, it [the takeover] is a fantastic insurance policy. We'll strengthen as we see fit. We've already strengthened and that will carry on.
"What I don't want is people thinking Reading are an open cheque book. We will be as careful as we have been in the past."
For the promotion and relegation news as it happens in League One this Saturday - follow our new exclusive text commentary service Football League Live. It has fixtures, results, as-it-happens tables and regular reports from across the Football League. Saturday, 1400 BST, bbc.co.uk/sport
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