I'd trade Rondo and a pick or 2 for Drummond.
Detroit has some major issues and we could help each other out. Maybe we have to take back Smith (personally I'm fine with), maybe the send us Monroe instead of Drummond? I don't really care but they should be considered our number one trade partner IMO.
If we got Drummond and gave up Rondo, than we just go young and long term, right now as is we seem in limbo.