The Congolese giants were well on track to winning the second tier African club competition title until they surrendered to a late strike last weekend in Lubumbashi.
Mazembe enjoyed a strong start to the deciding leg of the final tie – scoring two goals within the first 25 minutes to even the aggregate scoreline.
The Ravens were however unable to build on their early momentum especially in the second half despite being buoyed by their vociferous home fans.
Their lacklustre second half performance was dearly punished through a very late strike from Ben Youssef to win the trophy for the Tunisian side who had a Ghanaian – Seth Konadu – in their ranks.
And Asante who played a part in Mazembe’s disappointing believes his side didn’t just do enough to clinch the trophy.
“It was very hard to take this disappointment; we played very well in the first half,” he told Happy FM.
“But I think a bit of complacency set in in the second half and that cost us.”
Mazembe will now have to focus their energies towards their domestic campaign where they lead the Congolese top flight after four matches.
They will however be playing in the next edition of the CAF Champions League due to their Super Ligue success last term.