The 30-year-old, who has spent the last two years in the MLS with the Vancouver Whitecaps and Chivas USA, was signed by Impact back in December last year.
"It's a very quiet dressing room, I noticed. There are some individual personalities but they don't seem to kind of let that out yet," Reo-Coker told reporters.
"If we can get great team spirit, togetherness, and bond, it's amazing what you can achieve in football. You're in the right city with the right history behind it and with the fan base that has that European mentality and love for football."
Reo-Coker made 23 appearances for England at Under-21 level.