Former Chelsea full-back Emerson Palmieri cited a lack of space in the first-team as his reason for leaving Stamford Bridge to join Olympique Lyonnais this summer.Speaking to Gazetta dello Sport, the former Chelsea full-back revealed why he left west London. Emerson was told by his Italian manager Roberto Mancini that he needs to play regular first-team football to keep his place in the national team. Emerson said he was happy with Lyon's project, after joining them on an initial loan deal. Emerson said:“I decided to leave Chelsea as I had no space. Roberto Mancini told me: you need to play, you’ve to be a starter. OL proposed an interesting project and I accepted in two or three days. I’m really happy with my choice."Fabrizio Romano@FabrizioRomanoEmerson Palmieri: “I decided to leave Chelsea as I had no space. Roberto Mancini told me: you need to play, you’ve to be a starter. OL proposed an interesting project and I accepted in two or three days. I’m really happy with my choice”, he told Gazzetta dello Sport. 🔵 #CFC7:05 AM · Sep 24, 20218863423Emerson Palmieri: “I decided to leave Chelsea as I had no space. Roberto Mancini told me: you need to play, you’ve to be a starter. OL proposed an interesting project and I accepted in two or three days. I’m really happy with my choice”, he told Gazzetta dello Sport. 🔵 #CFCEmerson Palmeiri first joined Chelsea back in January 2018 for a fee of around €20 million. Despite penning a four-and-a-half-year deal, Emerson was never seen as a first-choice left-back and played second fiddle to Marcos Alonso. However, the 27-year-old full-back fell further down the pecking order when Chelsea signed Ben Chilwell from Leicester City last summer.As things stand, Emerson Palmeiri is having some sort of career renaissance at Lyon. The Italian international has so far played 6 six for the Ligue 1 outfit and has already scored a goal for his new side.Chelsea have had a rock-solid start to their new campaignUnder the leadership of Thomas Tuchel, Chelsea have always been a strong defensive unit and that has continued into the new season as well.Chelsea are currently sitting at the top of the Premier League charts, level on points and goal difference with Jurgen Klopp's Liverpool. In five Premier League games so far, the Blues have only conceded once, which came against Liverpool at Anfield.However, the strongest test for Chelsea's defense will come this weekend. They take on Manchester City in a repeat of last season's Champions League final. Despite their strong back-line, Chelsea are looking to sign yet another defender in the upcoming transfer window. The European champions failed to secure the services of Sevilla centre-back Jules Kounde in the summer and are expected to make another bid for the French defender in the January transfer window.Emerson Palmieri@emersonpalmieriIt was not the result that we wanted, but I'm proud of our performance. We deserved a better result... Let's keep working hard! Allez, @ol 🦁🟦🟥3:45 AM · Sep 20, 20216690367It was not the result that we wanted, but I'm proud of our performance. We deserved a better result... Let's keep working hard! Allez, @ol 🦁🟦🟥 https://t.co/4rDjv4rM3kAlso Read: Paul Merson's predictions for Chelsea vs Man City, Arsenal vs Tottenham and other Premier League GW 6 fixtures