SAO PAULO (Reuters) - Brazil's JBS SA , the world's largest meat packer, has agreed to pay $1.5 billion (£945 million) for Moy Park Ltd, the British unit of rival Marfrig Global Foods SA , a source with direct knowledge of the transaction said on Sunday.JBS, which has undertaken a massive overseas expansion since 2007, will assume Moy Park's debt as part of the deal, said the source, who requested anonymity since terms remain private. The deal could be announced o
