For his part, Obama said he's just focused on winning the nomination although at least one member on his team said Clinton would make a good vice president. Well, I know her and she'd make a good president or good vice president.
Source, in full
About the 2008 Democratic Party presidential primaries in an audio from "Trumped!", a syndicated radio feature that aired from 2004 to 2008. As quoted in Donald Trump Once Said Hillary Clinton Would Make A 'Good President (July 12, 2016) by Tara John, The Times.