By Martin Etonge BBC Sport Online, Yaounde

After a 1-2 away loss to Tunisia's Etoile Sahel, Tonnerre Yaounde know that only an outright victory will get them to the semi-finals of the Caf Cup.

The Cameroonian side know that Saturday's return leg will not be a walkover.

"It's going to be a difficult game. But we are getting our act together in order to secure victory," said Tonnerre manager Richard Obateba.

Tonnerre have been in camp for a week to prepare for the game and rely on their current run of good league form to achieve their target.

Liberian import Francis Doe could prove to be the team's joker.

Last Sunday, he had a hat trick, as Tonnerre crushed Cintra Yaounde 5-2.

The Caf Cup is Tonnerre's only hope for honours this season, as they are out of contention in the league and Cup.

Despite their first leg victory, Etoile Sahel coach Paolo Robin says his squad is not in Cameroon for a draw.

"We have come here to get the semi-final ticket, so we will have to forget about the result at home.

"It will be difficult match, because we have no real advantage over Tonnerre."