What if John Fredriksen's recent surprise sale of 2m shares in combination target Euronav really were a precursor to the shipping tycoon walking away from the deal?

That might not be such a bad thing, in the view of US investment bank Jefferies.

The numbers have changed since Fredriksen’s Frontline and Hugo De Stoop-led Euronav agreed to terms of a a shares exchange in July, and they haven’t moved in Frontline’s favour, according to a client note from Jefferies lead shipping analyst Omar Nokta.