The Brazilians departed for the Seychelles on Wednesday with a full-strength squad to face what Mosimane described as a "closed book" in St Michel on Valentine's Day.
The Tshwane giants have, however, learned that their upcoming opponents are a fierce attacking force after consulting with Zimbabwean Premier Soccer League side How Mine, who lost to the Seychellois in a recent friendly.
Speaking ahead of the game, Mosimane said: "They (St Michel) are closed book. They are not on TV and how are we going to know about them?
"It's an artificial pitch, you know the story. But it's no excuses. We said we want to play in the Champions league and we can't complain."