 Chalobah went on to make four more league appearances for Napoli before returning to Chelsea at the end of the campaign.In the summer of 2016, Chelsea rejected loan offers for Chalobah after new manager Antonio Conte had been impressed with Chalobah in pre-season, deciding that he should remain as part of Chelsea's first-team group.Chalobah made his first-team debut on 20 September 2016, when he came off the bench to replace Michy Batshuayi in the 79th minute of a 4–2 win over Leicester City to advance to the Fourth round of the EFL Cup.