<span style="line-height: 20.8px;">Some of the world&rsquo;s largest buyout firms are preparing offers for&nbsp;</span><span style="line-height: 20.8px;">Supervalu Inc</span><span style="line-height: 20.8px;">&rsquo;s&nbsp;</span><span style="line-height: 20.8px;">Save-A-Lot&nbsp;</span><span style="line-height: 20.8px;">business, making an outright sale of the U.S. discount grocery chain more likely than a spin-off.</span>