Aug 24 (Reuters) - Sun Life Financial Inc SLF.TO :
* In talks to buy Assurant (NYSE:AIZ) Inc's AIZ.N employee-benefits unit - Bloomberg citing sources
* Financial's deal valuing assurant's employee-benefits unit at about $900 million could be announced within two weeks - Bloomberg citing sources
* Source: (http://bloom.bg/1MJBZ97)
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