Everton attacking midfielder Gylfi þór Sigurðsson is optimistic that Iceland will qualify for the last sixteen of the World Cup even though they are in a tough group containing Argentina, Nigeria and Croatia.

The Cinderella team of the 2016 European Championship did not lose their first two games in France, drawing 1-1 with Portugal and Hungary, and Sigurðsson believes they they will get out of the group if they don’t lose to Argentina and Nigeria.

Iceland meet Nigeria in their second Group D game at the Volgograd Arena, Volgograd on June 22, 2018.