Tottenham midfielder Dele Alli says England must be ruthless for their World Cup opener against Tunisia.

Alli has told his England teammates they must grab their opportunity to make an instant impact on the World Cup against Tunisia here on Monday.

“We know we have to be ruthless," said the Tottenham midfielder.

"It's international football. You are not going to get too many chances, so when they do come you have to be ruthless and put it in the back of the net. We are going to have to be patient. Tunisia defend very well, so if we do have a lot of possession we have to make sure we are not forcing it. We have to stick together as a team.

“I don't think we can put a limit on what is possible for us this tournament. We've got a young, hungry team with experienced players as well. We don't want to say we can only get the the quarters or semi-finals. We believe we can go all the way. We have to. There is no point coming here and believing anything else."