Disappointed in Taxi leaving us for a friendly.
Not sure if these are the most recent regulations, but I think he has to go as it is an official FIFA date.
Friendly matches on a fixed/set date for qualifying matches for an international competition
If a national association does not have to play qualifying matches for an international
competition, it may wish to play a friendly match on a fixed/set date.
In this event, if a player is called up, he must be released to the national association as under
section b) above, and in accordance with Art. 36 Paragraphs 2a) and 5a). The period of release,
however, shall only be 48 hours.