This will be the first football test event as part of the return of fans to stadiums.
However, Foxes and Saints fans will be unable to attend. According to the Daily Mail, the 4,000 Wembley crowd will be made up of people from the local London borough of Brent. Health workers may also be invited to attend.
It’s believed the other FA Cup semi-final between Chelsea and Manchester City a day later will not take place under the same conditions.
Instead, City’s Carabao Cup final against Tottenham Hotspur has reportedly been selected as a test event a weekend later. That game is apparently due to host a larger number of fans than that 4,000 figure.
These test events are all an attempt to prepare the United Kingdom for hosting the upcoming Euro 2020 championships in the summer, with London and Glasgow selected as host cities.
Wembley Stadium is set to host the final on 11 July.