Sonny Bill Williams is looking to give away two tickets to the Rugby World Cup semi-final between New Zealand and South Africa to a Syrian refugee.

Williams posted a message on Twitter on Saturday saying: “any agency in London with a Syrian refugee that wants 2go to the game 2mrw I have two tickets to give you. Let me know”.

New Zealand captain Richie McCaw is predicting a “brutal” Test match when the All Blacks face South Africa in the World Cup semi-final at Twickenham on Saturday (Sunday AEDT).

McCaw’s men will go into battle as favourites in pursuit of a history-making second successive world title.