Democratic megadonor Tom Steyer on Tuesday suggested fellow billionaire Howard Schultz ought to rethink running for president as a centrist independent.

Steyer, a hedge fund manager-turned-environmentalist, specifically targeted policy positions the former Starbucks CEO and executive chairman has floated this week since announcing last Sunday he was considering a third-party bid for the White House. Schultz has been openly critical of some of the tax and spending initiatives being touted by Democratic 2020 contenders, including government-financed healthcare and higher education.