The 32-time Malaysia Cup champions, however, arrived in Vietnam yesterday without Michal Kubala and Afiq Azmi, who are both injured.
"Yes, I turned 62 today (yesterday) but my focus is on the match. It would, however, be a perfect belated present if my team can win on Wednesday (tomorrow)," said Irfan when contacted in Ho Chi Minh City.
"We are under-strength as without Kubala, we only have two available foreign players in striker Forkey Doe and defender Peter Chrappan.
"Afiq is down with a hamstring problem while Kubala injured his knee in training."
Saigon, who finished third in the V-League last season, lead the group with four points.
Irfan said Saigon are one of the best teams in the AFC Cup.
"We have come prepared but it will be a difficult match as Saigon are an experienced side, comprising former and current internationals.
"We had huge plans before but the life ban on Ramez Dayoub has affected us a bit in this event.
"Each team are allowed four foreigners but we only have three but one is injured now," said Irfan.
If Selangor fail to earn a point tomorrow, their AFC Cup dream will end but not for Kelantan, who take on V-League champions SHB Da Nang in a Group G match in Kota Baru today.
Kelantan coach Bojan Hodak said his team must not make mistakes in the match.
"Da Nang have a very good striker in V-League top scorer Gaston Merlo but the Argentine is not 100 per cent from a knee injury.
"They are an experienced team and we must play our best football tomorrow. We have been scoring regularly, 10 goals in the last three matches and this is a good record," said Hodak.
*Sumber Dari New Straits Time