Malaysia coach Ong Kim Swee says it's "not easy" to find replacements for the JDT quartet who announced their international retirements last month.
Despite a facial injury ruling him out for two months, Felda United's Christie Jayaseelan is still targeting a place in Malaysia's Suzuki Cup squad.
After the international retirement of Safiq Rahim, Malaysia head coach Ong Kim Swee has narrowed his captaincy options down to three players.
Singapore GK Izwan Mahbud hopes a saved penalty in the Singapore Cup semifinal is the start of improved form to secure a Suzuki Cup starting spot.
Singapore's Fazrul Nawaz has been ruled out of November's AFF Suzuki Cup because of a knee injury in a major setback for the four time ASEAN champs.
Singapore will face Bahrain, Malaysia and Hong Kong in friendlies in September and October, in key warm up for the 2016 AFF Suzuki Cup.