From Citi’s chief economist and general legend, Willem Buiter, today:
If we adjust for the probable mis-measurement of China’s GDP growth in official data, “true” global growth is probably around 2¼% this year and also is likely to be below 2½% in 2016 (i.e. well below the 3% long-run norm). EM growth on this measurement-adjusted basis probably is about 2½% YoY this year, the lowest since the late 1990s. Even after these downgrades, risks to our global forecasts probably lie to the downside.
Looks about right. Also via a Citi conference comes Dr John Hewson: