Football's world ruling body has long resisted calls to fall into line with WADA, a situation which prompted WADA to consult the Court of Arbitration for Sport (CAS) last month.

CAS decreed that FIFA's code did not comply with WADA's. However, that situation now looks about to change.

After a weekend of negotiations, WADA chief Dick Pound announced: "FIFA has affirmed that it will make the necessary changes before the start of the World Cup.

"Both WADA and FIFA have committed to accept and abide by the CAS opinion, and FIFA has stated it will make the necessary changes in time for its World Cup next month.

"FIFA's achieving Code-compliance will be an important and welcome step in the global fight against doping in sport".

Last week WADA threatened FIFA with axing football from the Olympic Games if it failed to comply with the code.

"The CAS opinion has confirmed that in at least eight portions of the mandatory sections of the code, the FIFA rules were non compliant," said Pound on Thursday.

"The world anti-doping code is a cornerstone of the fight against doping in sport.

"I'm quite confident that FIFA, now that it has a chance to review and study this advisory opinion we have from CAS, understands precisely what it has to do."

WADA cannot kick football out of the Olympics but Pound said that with the agency's role in advising both the International Olympic Committee (IOC) and governments, FIFA would be treading a tightrope if it failed to adopt the code.

"It is up to them (IOC and governments) to employ the necessary sanctions," added Pound. "And that could go as far as excluding football from the Olympics."