The 30-year-old South African is Perpignan's top-scorer this term, but will be allowed to leave Stade Aime Giral when the campaign finishes.

Coetzee arrived at Perpignan in February 2011 as a medical replacement after injuries to Maxime Mermoz and Jean-Philippe Grandclaude.

Grenoble currently sit at the top of the ProD2 - the French second division - but the ambitious south-eastern outfit only need eight points from their remaining five league fixtures to secure their spot back in the Top 14.