Gonzalo Higuain has landed in England for a medical as he prepares to complete his loan move to Chelsea in the coming hours.
The Juventus striker, who has been at AC Milan for the first half of the season, has been repeatedly linked with a move to the Premier League and now the deal is set to be done.
Chelsea are in desperate need for attacking reinforcements and Higuain boarded a private flight at Milan's Linate Airport at 7am UK time, bound for Farnborough.
From there, it is a 45-minute drive to Chelsea's Cobham training ground, where he will undergo his medical with the club keen for a deal to be done by midday.
If Higuain is registered by 12pm on Wednesday, he will be eligible to face Tottenham in the Carabao Cup semi-final second leg on Thursday night.
The club are desperate for him to be able to play in the game, and they put him on the earliest possible flight from Milan on Wednesday.
Spurs lead the tie 1-0 going into the second leg at Stamford Bridge, and Higuain would be likely to watch the tie from the stands if not able to play.
His arrival will signal the beginning of the end for Alvaro Morata, who is expected to join Atletico Madrid on loan until the end of the season.
The incoming Chelsea man flourished under Sarri at Napoli, before moving to Juventus in 2016 and then to AC Milan on loan.
Sarri and the striker enjoyed success together at Napoli before Higuain left for Serie A rivals Juventus in a stunning £76m move back in the summer of 2016.
Sarri is hopeful the Argentina international can end Chelsea's problems in attack, with the Blues having scored just four goals in their last five games.
AC Milan are on the verge of completing a £30million