Both Microsoft and Yahoo have existing relationships with Apple, with Yahoo providing stock data to iOS and Microsoft supplying Siri with Bing search results. Executives from both companies have reportedly already approached Eddy Cue, Apple's Senior Vice President of Internet Software and Services, about a potential agreement that could see one of them displace Google to become the default search engine for iOS devices and Macs. There is no indication Apple has made any decision which company, if any, will replace Google.
Yahoo has approached Apple in the past about expanding their relationship on mobile, although things moved in the opposite direction with iOS 8 as Apple cut out middle-man Yahoo for weather data and instead began sourcing data directly from The Weather Channel.
Yahoo has also reportedly been working on a revamp of its mobile search in hopes of landing an agreement with Apple to be the default search provider on iOS, but for now the companies are still in the discussion stages as Apple's deal with Google remains in effect for the time being.
Microsoft was said to be in the running for the 2010 deal with its Bing services, but Apple ultimately opted to extend its deal with Google that has seen Apple reportedly receiving in excess of $1 billion per