Is there extra-time in Carabao Cup? Liverpool vs Southampton rules on penalties and VAR

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The Carabao Cup's third round continues on Tuesday, with Premier League clubs involved in European competition joining the action.

The third round kicked off last week with four matches, but with the Champions League now underway, most of the ties are scheduled for this week.

This includes Liverpool's home game against a struggling Southampton, who were relegated last season and are seeking some cup success following a dismal start to their Championship season.

With the third round well underway, here are the Carabao Cup rules for this season regarding extra-time, substitutions and VAR....

Is there extra time in the Carabao Cup.

If a match ends in a draw after 90 minutes, it goes straight to penalties.

Extra-time will only be used if necessary in the semi-finals and the final.

What are the substitution rules in the Carabao Cup.

Unless every home club in the round has access to the system, it will not be deployed.

With a number of lower league clubs still in the competition, that clearly isn't viable

The EFL deemed it unfair for the other semi-final match to use VAR.

Last season, VAR was used in the semi-finals, which featured four Premier League clubs.