** Mayne Pharma climbs as much as 11.74% to A$4.950; biggest intraday pct gain since Aug. 23
** MYX considering buyout with Jefferies looking for potential suitors, media report says
** Co confirms Jefferies is its financial adviser and is assisting with strategies to maximize shareholder value
** Mayne did not provide any further information to Reuters
** Stock set for third consecutive sessions of gains; top gainer on ASX All Ordinaries index
** MYX down 23.6% YTD
(Reporting by Kumar Tanishk in Bengaluru)
((Tanishk.Kumar@thomsonreuters.com;))