By FOX Sports staff
The 32-time champions are currently on the brink of an embarassing early exit, having picked up just just two points from their opening four Group A games.
Their disappointing displays prompted Irfan Bakti to step down as coach following a shocking 3-0 loss to Sime Darby last month, although his departure did little to improve the Red Giants' fortunes as they played out a 1-1 draw with the same opponents a few days later under Maniam.
Nothing less than a win against ATM on Tuesday will be enough to keep them alive in the competition but Maniam wants his charges to believe they can accomplish an improbably comeback.
"We still have a mathematical chance to make the cut," he told The Star.
"All we need to do is win both our matches. I have full confidence in the team.
"What happen elsewhere is beyond our control. The important thing is we must not lose hope."
Selangor will have to do without a couple of key defenders as right-back Mahalli Jasuli has been ruled out with a knee injury, while Nasriq Baharom is suspended for the tie.
However, Maniam believes his side will be able to cope with their absences.
"We will reshuffle the line-up," the ex-Malaysia international added. "But it will not be a problem."
Meanwhile, ATM can book their place in the last eight with victory against the Red Giants, while second-placed Sime Darby can do the same by beating Johor in the other Group A encounter.
Image courtesy of Md Azreen (Corner Flag)