But it remains to be seen what part the Albion winger plays.
The Japan winger scored a superb volley in Saturday’s 2-2 draw at Spurs.
He did so after going on as substitute for the injured Diego Gomez and was later replaced himself.
The Argus reported on Saturday evening that Japanese media had seen Mitoma walk past the interview area at the Tottenham Hotspur Stadium seemingly in no discomfort.
He was declared fit to face Chelsea when Fabian Hurzeler spoke to the media on Monday morning.
The Seagulls head coach said: “He is good. He just had some cramps.
“He felt a little bit in the warm-up but I think he had a very effective short performance on the pitch.
“Scoring, helping us to get the equaliser. He also had some good actions.
“He had just had minor issues and he will be available.”
Mitoma scored the winner when Chelsea visited the Amex in the FA Cup last season.
Less than a week later, he produced a goal of the season contender to kick-start a 3-0 win over Chelsea in the league.
James Milner remains absent but Hurzeler said he will play again this season.
Diego Gomez is ruled out by a knee injury and Solly March will not be part of the matchday squad.
March suffered a minor muscle issue in training recently and was absent from the game at Spurs.