The tribute concert for Michael Jackson set to take place in Vienna this month has been rescheduled for London in June 2010.
Jackson's brother Jermaine said that too many top artists had been unable to perform at the event.
"Numerous stars were just not able to change their schedules to make a live appearance at the Vienna event possible," said Jackson.
The event had been due to take place on 26 September at the Schoenbrunn castle.
Earlier, representatives for Mary J Blige, Chris Brown and Natalie Cole said none of the three would sing at the concert, as previously announced.
"Many artists and performers who I have spoken to personally told me that it would be a great honour to be part of this memorial concert for my late brother," Jermaine Jackson said.
There had been doubts over Mary J Blige and Chris Brown singing in Vienna
"However, due to the short time-frame it was not possible for many of them to change their schedule so that they could be on stage in Vienna on 26 September, therefore we decided, after careful consideration, to change the date of the tribute concert to June 2010 - just a few weeks before the first anniversary of his untimely death.
"Now we have eight months to put this monumental show together and not just eight weeks."
The organisers, World Tribute Productions, said all ticket holders for the Vienna concert would receive a refund.
Spokeswoman Nina Elland told the BBC that discussions on the London venue were under way. "We need time to confirm the location. We are definitely moving to London and Wembley Stadium is our favourite location."
Michael Jackson performed at the original Wembley Stadium 15 times.
Another reason for relocating the show was the "bizarre" press reports in Austria about the event, the Austrian promoters said.
Jermaine Jackson said he could not understand why the acts he had lined up for Vienna were being ridiculed.
"When artists who have won eight Grammy Awards and sold millions of records around the world and are able to sell out large stadiums are then called 'B-list artists', are made fun of and generally disrespected, is something I just cannot understand.
"If these artists are not welcome in Vienna, London is more than happy to have them."
Speaking at a news conference earlier this week, Jackson told reporters that up to 25 performers had been lined up to sing in Vienna.
Organisers had said they were expecting 65,000 fans at the Vienna show - paying up to 512 euros (£448) to attend.