Imminent Chelsea director of recruitment Paul Winstanley was responsible for a major fine Brighton were hit with for breaches of FA agent regulations.
The Seagulls were fined £366,000 or 'misrepresenting' transfers on multiple occasions by allowing one agent to work for the club and a player in the same transfer, which is prohibited by the FA.
The Daily Mail claims Winstanley is understood to have accepted responsibility at Brighton for one of the breaches, which the FA accepted was a mistake made in good faith.
Brighton's head of recruitment is expected to become the sixth member of staff to follow manager Graham Potter to Chelsea after the two clubs meet in the Premier League today.
Brighton will be due compensation from Chelsea for Winstanley's move.