Bayern Munich CEO Karl-Heinz Rummenigge has vowed that Thomas Muller will not be the Premier League's first €100 million signing, but fears English clubs will keep signing the Bundesliga's top players.
The new £5.136 billion British TV rights deal for Premier League football has been a worry for German football officials ever since the Bundesliga became one of the preferred markets for the biggest league in the world.
The Premier League broke its spending record for the summer transfer window as clubs splashed out some £870m (€1.18bn) on signings.
Stars such as Son Heung-Min, Kevin De Bruyne, Roberto Firmino and Bastian Schweinsteiger made the move to England this summer with the Premier League investing a reported total of over €200m for 13 Bundesliga players.
In a long interview with German tabloid Bild ahead of his 60th birthday this Friday, Bayern CEO Rummenigge said that "[by the latest] next summer" a Premier League club will invest more than €100m on one player, and has warned the Bundesliga to be careful.
"The English will double their TV income, and can basically buy every player in the world," Rummenigge said. "We need to watch out that there will be no clearance sale in Bundesliga, because I fear that Germany will be the preferred market for the English clubs."
Bayern themselves made their standpoint clear this summer when they refused to sell Germany international Muller to Manchester United despite a reported €120m offer for the attacker.
Rummenigge insists Bayern will resist any attempts to sign the World Cup winner, saying: "He's under contract for another four years. He'll stay -- no matter what is offered. There is no price I would even start considering it. Thomas is a special character, different to all others we have seen at this club before, on and off the pitch.
"There are players who are technically better, and there are players who are faster, but there is no second Thomas Muller on this planet. He's extremely important for us. He embodies Mia San Mia [Bayern's motto of "We are who we are."]"
Muller said of the Premier League's increasing wealth earlier in September: "Transfer fees don't show which player is better. It's only a number necessary for a club to get a player. It's just a development.
"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? I don't think we need to worry about it. Football is a sport with huge potential."
The Premier League has been ranked fourth for giving football fans value for money while the Bundesliga offers the best quality game for the price according to a new index, though Rummenigge recalled recent trips to England and praised the youth academies among others.
"[Up to] 250 youth players can be trained at Manchester City," he said. "I have the impression that they have looked for the best ideas everywhere, and now copy the path German football took 10 years ago.
"Successful times are lying ahead of English football. The national team already is a bit better than it has been in the past."
Rummenigge also announced that Bayern are set to enter contract talks with Pep Guardiola, who is in the final year of his first deal with the German champions and has yet to decide his future.
"I am optimistic," he said, and added that Bayern can offer a strong squad, a "fantastic club, a great stadium and beautiful city."
Over the past few years, Rummenigge has become one of the most influential people in world football. He currently also acts as the president of the European Club Association, and has backed current UEFA boss Michel Platini to succeed the outgoing Sepp Blatter ahead of the upcoming FIFA presidential elections in February 2016.
"I make no bones about wishing Michel Platini all the best as the FIFA president," he added. "Should he be elected, he will initiate the right reforms. I am convinced that he would be a good FIFA president."