The Bears are battling with the Detroit Lions for the lead in the NFC North, while the Browns are on a four-match losing streak.
The wide receiver told the Browns' official website: "Preparations went really well. We know they are a good football team and they will come out fired-up and ready to go. We just need to keep swinging, that will show what kind of character is in the locker room.
"We just need to keep fighting. It's a great opportunity. Why not seize the moment? [Quarterback Jason Campbell] is a great player and you can see his experience and poise, but you have to stay on top. We can't give them an opportunity to get ahead of us.
"The best thing about our offense is we have a bunch of guys who can make plays. [The fans] are a big part of why we do what we do. We just need to stay together and understand they are just as important as us."
Last week's defeat to the New England Patriots has left the Browns unable to win their division this season.