United Spirits-Diageo may have to divest stake in Whyte & Mackay for the deal between the two companies to sail through, emCNBC TV18/em reported today quoting sources. The company is likely to get 12-18 months to divest stake in Whyte & Mackay, which will help Diageo deal with the scrutiny of anti-trust regulators in the UK and Europe easily. [caption id=attachment_549361 align=alignleft width=380