Former Arsenal manager Arsene Wenger has decided not to stand against Gianni Infantino as a candidate in Fifa's presidential election.
The Frenchman had been considering running for the job but sources have told BBC Sport that he has ruled himself out.
Current world football chief Infantino's position was plunged into crisis by a backlash caused by his failed plan to sell commercial stakes in the World Cup to private investors.
Wenger - who is Fifa's head of global development - would have had the backing of European football's governing body Uefa, which has spearheaded opposition to Infantino.
On Saturday, French newspaper L'Equipe reported that Wenger was unlikely, external to challenge his boss.
Wenger has credibility throughout the footballing world, and this will be a significant boost to Infantino as he seeks a fourth term as president.
Uefa is said to still be hopeful of finding an alternative candidate before Wednesday's deadline.
One influential figure in the group of stakeholders opposed to Infantino told BBC Sport the news was "a real shame".
"Even if not perfect, I do think he could have galvanized many around the world," they added.
Former Tottenham defender Ramon Vega was the first person to put his name forward in October.
Japan Football Association honorary president Kozo Tashima has also announced his intention to stand.
