Gonzalo Higuain will reportedly arrive in London in the next 48 hours for medical and complete an initial six-month loan to Chelsea.
Sarri worked with Higuain at Napoli in the 2016-2017 season and Argentine scored 36 goals.
The Guardian say a breakthrough has finally been reached and the 31-year-old is expected in England this weekend to put pen to paper on a deal.
In a sign that an announcement could be close, the report claims Higuain has already said his goodbyes to his Milan team-mates.
