Pirates won the first leg 2-0 in Bamako, the neutral venue chosen by their Guinea hosts, who still cannot play in their own country due to fears over Ebola.
Goals from Thamsanqa Gabuza and Oupa Manyisa gave them one foot in the group stages of the competition, but Toure says now that nobody expects his team to advance, they will play with more freedom.
"There will be less pressure on the team in the second leg because we have nothing to lose. This defeat can free the kids and push them to excel in the second leg,” Toure tells reporters.
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He also lamented his side’s luck in the first leg, suggesting Pirates had scored with their only two chances, while his side missed plenty.
"We made too many mistakes, especially in the opposition box,” Toure says. “We got a dozen clear chances, against only two for the South Africans. It's frustrating, but at this level of competition these are errors you cannot make.”