From next season, Pochettino hopes to turn the negative situation at Stamford Bridge around, following a horrendous display in the just concluded campaign.
But Rodrigo would score less than 60 seconds after to net a consolation for Sam Allardyce’s side.
Despite having the upper hand in the early minutes of the match, Chelsea failed to break through Brentford’s defence.
Brighton took control of the game from Chelsea in the second half, grabbing a win and ensuring Chelsea remained 11th on the table.
A much-improved attacking display was needed from the visitors, who ramped up the pressure in search of an equaliser after the break.
The move marks a return to Stamford Bridge for Frank who enjoyed an illustrious playing career with the Blues.
Chelsea are expected to reappoint the former club’s captain and manager, Frank Lampard as their new caretaker manager.
This is Arsenal’s second defeat in the Premier League since the 3-2 to Manchester United at Old Trafford in September 2022.
The former Burnley manager replaces Frank Lampard, sacked a few days after Everton’s 2-0 defeat to West Ham two weeks ago.
