Missing out on Champions League spots under Antonio Conte was a huge issue and we can not spend another year out of Europe's elite club competition.
For the moment Callejon has not asked to leave Napoli, but according to Italian daily Gazzetta dello Sport, things could change regarding his plans later in the summer transfer window.
The same article states that the former Napoli boss will have to convince Chelsea FC to part with a transfer fee in the region of £88m to sign the Senegal global.
IOS App Store turning 10, APAC makes up 60% of consumer spend
Their guidelines weren't clear at times and the approval department became infamous for rejecting apps without much rationale. The download store first opened its digital doors on July 10, 2008, with a mere 500 titles on its virtual shelves.
Conte's compensation would be expensive and it appeared that had scuppered a deal for Sarri, with Chelsea looking at cheaper alternatives such as Laurent Blanc.
Chelsea now hope to move quickly by unveiling Sarri within 48 hours and axing Antonio Conte by the end of the week.
Peculiarly, it has been reported that Sarri will live at Chelsea's Cobham training ground upon completion of his move, as the former Empoli manager seeks to rebuild his squad ahead of the return of players on July 9.
They've been heavily linked with a number of Serie A players already in Juventus' Daniele Rugani, Napoli's Dries Mertens and Inter Milan's Matias Vecino.