General Motors’ UK, Belgian and Spanish employees would bear the brunt of job cuts in the German-led rescue of Opel, according to figures floated by Magna, the lead investor, and confirmed by people close to the sale.

The news brought angry reactions from union leaders ojn Tuesday, ahead of a rally planned for Wednesday by GM’s European unions at its plant in Antwerp, which Magna and the US carmaker say may need to close for Opel to become viable.