Victor Matfield has weighed in on the Sharks' surprise decision to bring All Blacks great Ma'a Nonu to DurbanThe Springboks legend believes Nonu could make his biggest impact away from the playing fieldAnother New Zealand rugby icon has also backed the move and explained why it could benefit everyone involvedEx-Springboks star Victor Matfield has shared his honest verdict on the Sharks' decision to sign All Blacks legend Ma'a Nonu in a mentorship role. Image: Phil WalterSource: Getty ImagesFormer Springboks captain Victor Matfield believes the Sharks have made the right call by bringing All Blacks legend Ma'a Nonu to Durban, saying the veteran's experience could be invaluable despite his age. Victor Matfield backs Sharks signingSpeaking on The Rivals podcast, Matfield said Nonu's rugby knowledge could be a major asset for the Sharks. "He has got a lot of knowledge about the game... he's still not a bad player," Matfield added. The endorsements from two rugby greats suggest the Sharks may have signed far more than just an experienced player.