FIFA's new president Gianni Infantino, who was elected in February, indicated recently that he would wait until summer to name his number two but the announcement could come during a congress in Mexico City.
"The name of the new secretary general should be announced today (Friday) and this new secretary general should be a woman who is not European," the source told AFP on condition of anonymity.
The former secretary general, Jerome Valcke of France, was sacked in January and banned from football for 12 years over misconduct in television deals and World Cup ticket sales -- one of the many scandals that hit FIFA.
Stating it was committed to "gain and retain the complete
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trust" of players, Irish said, "The best results will always be achieved when players are part of and buy into regulations, rules and protocols that affect them.
"Everyone needs to be in this fight together. We have been pushing to formalise the relationship with the ACU for some time, and we will continue to do so, as we think that this is vital to achieving good outcomes globally.
"By ensuring that player representatives are able to have input into operating procedures (including those related to how player evidence and statements are dealt with), protocols and regulations, it will help to build and develop trust and confidence," he added.