Speaking to ESPN, Mac Allister said: "We always focus a lot on the group and the team. We know that when Leo is not there, we have to become even stronger because we don't have that player who, when things go wrong, can save us.
"We know that when Leo is there, they (rivals) are a little more afraid, it is normal. We also have players who play in big clubs in Europe and when they see the Argentine National Team, they know that it is not going to be an easy match and that's what we want. We want to do our best so that the rival has a difficult day."