Asia's caretaker football chief and presumed next president has pulled out of upcoming leadership elections, a source said yesterday, in a shock move which threatens further turmoil at the troubled body.

China's Zhang Jilong will not contest elections in early May for either the Asian Football Confederation presidency, vacated by Qatari Mohamed bin Hammam after bribery claims in 2011, or the available FIFA executive committee seat.

"He's not running. He has decided after long and careful thought," said the source close to Zhang. "He doesn't want the AFC to be split for the next two years."

The source, who did not want to be identified, said Zhang made the decision "a couple of days" ago, before yesterday's meeting in Seoul of the East Asian Football Federation's executive committee. It has not been formally announced.

He denied the former Chinese soccer boss and previous election favorite lacked the support to win the job full-time. But he said the 61-year-old Zhang simply felt unable to unite the Asian body over a shortened two-year term.

The next president of the 46-member confederation, the world's biggest, will be decided at an AFC Congress in Kuala Lumpur, Malaysia, in May. The winner will complete bin Hammam's current term, which runs until 2015.

Thai football chief Worawi Makudi, a bin Hammam ally, has already thrown his hat into the ring, along with Bahrain's Sheikh Salman bin Ibrahim al-Khalifa.

"The member associations are split not in half, but in several parts," the source said. "It's his (Zhang's) wish that the football family can get together, back to unity and solidarity."

He added: "We hope that the less (candidates) the better, otherwise it will be certain chaos for the AFC."