He had played just 19 minutes in the meantime and, having been left on the bench by Sarri in favour of Davide Zappacosta when his side were desperately chasing the game against United, the youth team product has become the poster boy for the disaffected among Chelsea's support base in recent weeks.
Speaking in his pre-match press conference, the Italian said (as quoted by the club's official website): "I have to think I will be the manager of Chelsea for a long time, otherwise I can not work". With Jorginho, it's easier I think.
His future at Chelsea still remains unclear and talk on Thursday soon emerged that Roma have appeared to move quickly to try and install him as manager for next season.
According to La Reppublica, Roma consultant Franco Baldini and President James Pallotta had dinner in London with Sarri, where he was proposed Eusebio Di Francesco's position.
Sportsmail reported this week that Sarri is is facing a virtually impossible task to save his job.
Social media users have been quick to call for her to follow Sarri out the door should the Italian boss face the axe at the Bridge, which seems highly likely, with one prominent fan assuming she is "running the club into the ground", another even launching a "Marina Out" hashtag on Twitter.
"We need to see the situation on Saturday, see what we spent on this match and we need to see the recovery", said Sarri. "It's not physical. It's just the tactical things he likes to do", said Rudiger. "We all worked hard and played really well", Hudson-Odoi explained.
"It's the same if you sit in the school the whole time listening to someone".
After the tumultuous week he has endured, you can not blame Maurizio Sarri for taking just about anything right now.
"But I want to see football in another way". Granovskaia also has the final say on player recruitment and managerial appointments, meaning many have questioned her decision to employ Sarri and a host of other underperforming players.