Munster Rugby head coach Johann van Graan believes his side’s Round 5 and 6 matches against Exeter Chiefs and Gloucester Rugby in the Heineken Champions Cup will provide “incredible challenges” for the Irish province. The Limerick-based outfit were edged out 13-12 by Castres Olympique in Round 4 last month, but they remain top of Pool 2 by three points, with all four teams still able to qualify for the quarter-finals. Munster travel to Gloucester in Round 5 on January 11 and play host to Exeter at Thomond Park in their final Pool 2 game eight days later. [jwplayer uICjHsBw] “[We have] Gloucester away next and that is probably the game of the season for us thus far in the Heineken Champions Cup,” the 38-year-old told the Irish Times. “I watched the Exeter-Northampton game with my family and that was a phenomenal game of rugby. They are coming next to Thomond Park, so incredible challenges are awaiting us.” Van Graan was speaking after his side’s recent 26-17 triumph in the Guinness PRO14 over reigning Champions Cup holders Leinster Rugby.