"Sarri was right to be anxious".
However, moments after the England global was captured on camera leaving the stadium on crutches, with his foot strapped with protective boot.
Loftus-Cheek has established himself as a key member of the head coach's midfield in recent months, helping them to third place in the Premier League and the final against the Gunners.
The match was dubbed "Final Whistle on Hate" as both clubs joined forces to raise awareness and money - an estimated $4 million - in the battle against hate and prejudice.
The Italian tactician opted for a strong Chelsea starting XI, even as he maintained the fixture was far from ideal with their Europa League final game coming up on May 29 in Baku, Azerbaijan.
"Travelling so far away and returning Friday morning before a Sunday match is tough, " Sarri stressed.
He was absent as the 23 touring players and the chairman, Bruce Buck, visited a Holocaust Memorial on Tuesday but was on the touchline as his team ran out comfortable winners against the Major League Soccer side with two goals from Ross Barkley and another from Olivier Giroud, with Abramovich visiting the dressing room post-match. Loftus-Cheek told Sky Sports.
Manager Maurizio Sarri was left reeling over the prospect of taking his stars to America just days after the conclusion of the Premier League season, and with a Europa League final to prepare for. Four of those came in the Europa League, in which he has been a regular.