The Belgian has managed to come up the ranks at Brighton after his superb improvements over the years.
Trossard opened the score lines as Brighton stunned Chelsea to grab their first victory for the month of October, having drawn just 2 and losing the rest.
Blues were impressed watching Trossard disorganize their defense line, handing Kepa Arrizabalaga yet another clean-sheet-denying performance.
According to reports from Daily Mail, the West Londoners are keen on a transfer deal for the 27-year-old.
The former Genk Winger never had the desired spell at his former side, spending most of his time at the Belgian club out on loan though was still able to net 27 goals in 83 games which came after his last loan spell with Leuven in 2016.
Since joining Brighton in 2019, Trossard has gained himself a high reputation in the squad, racking up 112 Premier League appearances in which he has also netted 25 goals.
Daily Mail claims the 5.7ft Winger is now on top of Chelsea’s want list with the Blues ready to submit an offer for his signature by January.
Chelsea look to make Trossard their third signing from the Falmer Stadium having earlier succeeded in luring both Marc Cucurella and Graham Potter.
The December born still has a valid contract with Brighton until 2023 with an option to extend into 2024.