Bertrand told the official website, "I can't wait to get out there and play league football and show people what I can do. I know Oldham are a very good side and just missed out in the play-offs last time so hopefully I can help them to do well in the league again. During pre-season I played for Chelsea in a tournament in Malaysia against some fantastic sides including PSV Eindhoven and Bayern Munich. AC Milan, Juventus and Boca Juniors were also there and it was a fantastic experience. Now my fitness levels are right up and I'm ready."
"As a youngster I based my game around Ashley Cole so it was fantastic when I got to link up with him and train alongside him at Chelsea. I was a winger as a youngster and seem to have moved back over time, but I still like to get forward wherever I can. I'll also be looking to learn from the experienced defenders like Sean Gregan and John Thompson while I'm here. Hopefully they can show me a few things and add to my game."