Munster sweat over fitness of All Black Alby Mathewson

Munster could be plunged into yet another scrum-half injury crisis ahead of their tough Heineken Champions Cup trip to Exeter Chiefs next weekend after Johann van Graan admitted he was worried about the fitness of All Black Alby Mathewson.

The 32-year-old New Zealander limped out of Saturday night’s derby loss to Leinster minutes after scoring a late try in just his second appearance since being granted a work permit. The former Hurricanes and Toulon star had been signed in September on a four-month contract as emergency cover for the injured Conor Murray.