Chelsea have officially named 47-year-old Graham Potter as their new coach, replacing Thomas Tuchel, and he will face Milan in the Champions League next month.
The Premier League side surprisingly pulled the plug on Tuchel yesterday following a 1-0 defeat to Dinamo Zagreb that left them bottom of their Champions League group.
Milan were held to a 1-1 draw away to RB Salzburg.
Potter was appointed after Chelsea bought him out of his contract with Brighton and Hove Albion, where he had been since May 2019.
The European showdowns with Milan are at Stamford Bridge on October 5 and at San Siro on October 11.
Potter has only participated in European competition once before, in 2017-18 at the helm of Osterunds FK in the Europa League.
He was in charge for eight wins, three draws and as many defeats.
“We are thrilled to bring Graham to Chelsea,” said club owner Todd Boehly.
“He is a proven coach and an innovator in the Premier League who fits our vision for the Club. Not only is he extremely talented on the pitch, he has skills and capabilities that extend beyond the pitch which will make Chelsea a more successful Club.
“He has had a major impact at his previous Clubs and we look forward to his positive impact at Chelsea. We look forward to supporting him, his coaching team and the squad in realising their full potential in the coming months and years.”
Chelsea have had a rough start to the season in the Premier League too, managing three wins, a draw and two defeats.