The difference in economic potential between clubs in Italy, those in England, or the big two in Spain is very high.
When a club has €200m left on its transfer budget in the final days of the transfer period, why shouldn't they make a higher bid when their initial €70m bid has been rejected?
Given the amount of money circulating in the sport, European taxpayers and supporters are entitled to know how their clubs are being managed.
Arsene Wenger has got to unlock the purse strings
Manchester United and Liverpool have been bought with huge leverage, and we've got Roman Abramovich at Chelsea who can turn his loans into shares. It is really important for the Premier League to ask itself: if a club is being bought on such a mountain of debt, isn't that a possible recipe for disaster for the future?
All I can do is assess the value from Manchester United perspective. Whatever Chelsea do, they may have a different criteria, and different financial assets.
There's no shortage of investment into Manchester United.
We should concede that a club like Leeds that is watched by 500,00 to 600,000 people live on Sky, getting from the league only £2m to 2.5m and are actually penalised because we are more than 20 times on TV.
I know the 'big spending club v. smaller club' theme is popular in the Premier League. I don't think about it - we are 30 teams trying to win the championship, and you do what you need to do.
The mandate of financial fair play in Europe is for clubs to live within their means.
I know that a lot of German clubs are unhappy with the Premier League clubs' spending, but I think it is something good for all clubs in the end.
With the club now in administration and concern about where the money for land sale has gone, I know there are huge commercial difficulties to be resolved, but I hope that football will once again become the most important issue.
As long as you've got serious investors who wish to put money into football, I applaud. It proves that football is attractive. What upsets me, what I find scandalous, is when clubs accept fools.
Big clubs with one rich owner have been one of the main changes in football since I started playing.
The money's there in England. They try to gather the best players. We do it differently here at Bayern. We have no investors, no owners.
The buying power of clubs is very different. You can't sign players if you don't have money, and if there is no money, that's it. As a player, there's nothing you can do.