The 21-year-old established himself as an important player for the Foxes and helped them climb to the summit of the Championship table, netting three goals along the way.
Despite Casadei being exposed to regular football and developing rapidly, Chelsea have decided to exercise a break clause in his loan deal.
The west London club confirmed the decision on Friday evening in a brief statement, with the Italian returning to Cobham immediately.
According to Fabrizio Romano, Chelsea’s intention is for Casadei to be involved in the first-team squad for the remainder of the season rather than be sent out on loan again.
He has impressed enormously at the King Power Stadium and the Blues feel he is ready to contribute immediately.
Casadei will begin training with Pochettino and the first team in the coming days and could even be in contention to make the matchday squad for their FA Cup fourth-round tie against Aston Villa in a week’s time.
Before that, the Blues are in action against Middlesbrough in the Carabao Cup semi-final but because Casadei was not eligible for the first leg he cannot play in the second.
Chelsea are currently lacking depth options in midfield to bring off the bench, with Carney Chukwuemeka – who is more offensive-minded – the only midfielder Pochettino could call upon off the bench last time out against Fulham.
Casadei’s return could prompt questions over the future of Conor Gallagher, however, with the 23-year-old having been linked with a move to Tottenham this month.
Leicester, meanwhile, have been braced for Casadei’s departure and are already in talks to sign Stefano Sensi from Inter Milan.
Casadei went a long time without scoring, nearly four months in fact, before netting against Rotherham at the back end of December, with manager Enzo Maresca saying of the youngster: ‘Finally! He had many chances. I said: “Cesare, you scored in the first game and then you stopped!”
‘But Cesare is this kind of player. If you see every game… Birmingham, last game, he was one v one against the keeper. Every game he plays, he has chances.
‘Because of the age, he needs to become a little more clinical, but he’s a very, very good player.’
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