Coaches of World Cup qualified teams are required to submit a preliminary roster of players for the tournament by Friday, as they begin the process of finalizing their squads for the tournament in Qatar.
Each of the 32 participating countries must submit a list of a minimum of 35 players to a maximum of 55 before the end of the day, in the first step of the selection process.
The selectors have until November 14 to decide their final list of 26 players before the deadline at 1800 GMT. FIFA will publish all the lists the next day.
The FIFA tournament regulations stipulate that the final list must come from the preliminary list, without allowing any last minute changes during the following three weeks.
FIFA will not publish the preliminary lists, but some countries could choose to, which would signal their intentions and could put an end to some of the early debates on team selection.
World champions France have a long list of injuries that coach Didier Deschamps will have to reckon with in the coming days, although the preliminary list is long enough to include players in a race against time to get fit for Qatar.
The England right-back role debate could also become clearer as manager Gareth Southgate makes his decisions. There has been speculation that Liverpool’s Trent Alexander-Arnold could be part of his plans after being recently ruled out.
Brazil did without Gabriel Jesús in the two friendlies played in France last month. The World Cup begins on November 20 and the final is held on December 18.