FMF official Decio de Maria said during Thursday's symposium that the Mexican national team would play in Europe in March of next year. He was asked about Mexico's plans for 2008 and de Maria mentioned those plans. He did not elaborate, however, as to an opponent.
I believe the FIFA fixture date is the final weekend in March but not sure so don't hold me to that. There is also a FIFA date on Feb. 6 but it didn't sound like they'd be playing in Europe on that day.