Eric Schmidt Says Google Would Love to Replace Microsoft as Yahoo!'s Search Partner - Forbes

Big decisions ahead for Yahoo

"Several people who cover Yahoo have stated in very strong language that, although the search partnership with Microsoft has been a failure, there is no way that Yahoo could do an alternative deal with Google due to regulatory issues.
I disagree with that view completely.  A lot has changed since 2009.  Yahoo!’s search share has dropped markedly.  It also had to outsource all its back-end search technology (and talent, basically) to Microsoft.  It simply isn’t the same situation now as it was then."

Eric Schmidt Says Google Would Love to Replace Microsoft as Yahoo!'s Search Partner - Forbes