London ? Diageo PLC, the world’s largest spirits company, said Thursday that the U.S. investors who want to buy its Burger King business want to change the deal.

Diageo said talks about possible revisions in its agreement with the consortium ” made up of Texas Pacific Group, Bain Capital and Goldman Sachs Capital Partners ” would start immediately and continue over the next few weeks.

The consortium has asked for changes “in the light of the conditions existing in Burger King’s markets and the buying group’s judgment of their potential effects under the agreement, including their potential effects under its financing,” Diageo said.

The investor group agreed in July to buy Miami-based Burger King for nearly $2.3 billion.

A source knowledgeable about the deal said that both sides are committed to the sale. The buying group might want to renegotiate the price because of the economic downturn, or it might be experiencing problems raising money to pay for Burger King, the source said.