Brendan Rodgers has admitted that he "doesn't know" what the Europa Conference League is after Leicester dropped into the competition.
A 3-2 defeat to Napoli condemned Rodgers' side to a third-place finish in Europa League Group C behind their hosts and Spartak Moscow.
That means that Leicester will now appear in the play-offs of the tertiary continental competition, which was introduced by UEFA this season.
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Rodgers revealed that he had not yet taken notice of the third tier event.
"I've got to be honest I don't even know what the competition is," Rodgers told BT Sport.
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"I was focused on the Europa League and winning this group and at the very least finishing second. But I am sure I will find out soon enough."
After falling 2-0 behind after a strong start from the Italians, Leicester fought back to level with quickfire goals from Jonny Evans and Kiernan Dewsbury-Hall either side of the half-hour mark.
A draw would have been sufficient to enable Leicester to progress at the expense of Napoli, but Eljif Elmas' second secured an injury-hit side victory.
Leicester's last hope was that Legia Warsaw would secure a draw or more against Spartak, and the Polish side had ideal opportunity to level from 12 yards after being awarded a stoppage-time penalty.
But Tomas Pekhart's penalty was saved by Aleksandr Selikhov, enabling the Russians to progress as group winners.
Rodgers said that his side had only themselves to blame after a mixed European group stage campaign.
"There is a lot of naivety in our team, with a lot of young players and it has been a big demand for them this season," he added.
"We have played a number of systems but individually it comes down to having that mentality to track a runner or stop a cross. We were good offensively but it was nowhere near good enough."
The draw for the Europa Conference League play-offs will be made on Monday 13 December, with Leicester to face one of the second-placed finishers from the group stages of the third-tier competition.
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