Ghana's Sulley Muntari, who helped Inter Milan to a European and domestic treble last season, insisted on Wednesday that sitting on the bench at the World Cup is not a problem. 'It's good to see the guys playing well. It's not a problem that I'm not playing,' said Muntari, who was replaced in the team by Andre Ayew of French second division side Arles-Avignon in Ghana's 1-0 win over Serbia. Ghana's Serbian coach Milovan Rajevac said he was keen to protect Muntari from injury. 'Muntari didn't play because he has been injured a few times. We don't want to risk him and he will have a very important job to do when the time comes,' said the coach. Muntari has enjoyed a rocky time at international level. He was involved in a row over bonus payments ahead of the 2004 Olympics and then opted to stay with his club rather than play in a friendly international in Angola at the start of this year. Ghana face Australia in their next World Cup game on Saturday where a win could give them a place in the last 16. 