Chimbonda, 29, said: "The situation at Tottenham is something I have never experienced and it's not nice being out of the team.
"I wanted the manager to talk to me to tell me what's happened and tell me why I'm not in the team.
"Roy Keane and Ramos are similar managers but Roy talks more to the players than Ramos did, because of the language barrier. I prefer having a manager like that."
He added: "I've got a new team and I just need to play, I won't think about Spurs.
"I've left but I don't need to prove anything to anyone. Iâ€™m happy at Sunderland and I will just play my football because we're progressing and can definitely do something big this season.
"Going to Spurs is a big test for us and it will be a good battle but we are capable of winning there."