Plans to reschedule Birmingham's Party In The Park may be finalised today, to avoid it clashing with next month's Live 8 concert.
A host of pop stars including Kelly Osbourne, McFly, Natasha Bedingfield and Rooster were due to take part in BRMB's event at Cannon Hill Park, Edgbaston, on July 2.
But after news that the follow-up to Live Aid - five free concerts in London, Paris, Rome, Philadelphia and Berlin - would take place on that date, organisers were forced to rethink their plans.
However, hours after Bob Geldof's announcement, plans for London's Party in the Park were shelved to allow Live 8 to go ahead.
Now it is believed BRMB's one-day charity event, in aid of Cash for Kids, will be put back 24 hours to July 3.
A BRMB spokesman said: "We began looking at contingency plans about two weeks ago.
"In terms of what's happening in London, Capital agreed to pull out in favour of Live 8 but Birmingham's a different situation.
"This event has become established as one of the biggest events of its kind, and we should know what the plan is by tomorrow."
There are fears that if Party In The Park goes ahead as planned, it would not be able compete with Live 8's stellar line-up, which includes Madonna, U 2 and Sir Paul McCartney.
The BBC, which is broadcasting the musical marathon, will also show the event on a series of big screens around the country - including one in Birmingham.
BRMB's spokesman added: "It would be great if that could be set up in Cannon Hill Park which could accommodate the huge crowds who will want to see it.
"There is the view that while Party In The Park is one of the best pop events in the country could not compete with Live 8."
n Live8 organisers are donating £1.6 million to the Prince's Trust after the charity cancelled its own pop concert to make way for the event.
The trust had been due to hold its annual Party in the Park gig at Hyde Park on July 2.
But when Bob Geldof chose the same date and venue for the Live8 extravaganza, it agreed to step aside.
Now Geldof has announced plans to donate the first £1.6 million made from the text ticket lottery to the Prince's Trust.
A proportion of that money will go to the charity Help A London Child.