Despite struggling to win over his manager Maurizio Sarri, the 23-year-old has played an increasingly significant role as the season progressed.
Loftus-Cheek would likely have started the final against Arsenal on May 29, had he not succumbed to injury last night.
Chelsea fear the attacking midfielder has suffered an Achilles injury similar to the one which has ruled his teammate Callum Hudson-Odoi out until the start of next season.
The player was seen leaving the Gillette Stadium in a protective boot, before boarding the flight back to London with the rest of Sarri’s squad.
“They still don’t know but I think Ruben has a little bit of pain.
“It doesn’t look very good to be honest. But fingers crossed he will be back as soon as possible. I think it’s his Achilles, he was on his own,” Alonso told reporters after the game.
