Despite more than 100 international appearances with the Albiceleste, the Atletico Madrid coach put on a rivals' kit for a kickabout with friends.
Argentina fans got a jolt this weekend, seeing a national team legend trade out the Albiceleste shirt for that of a rival.
Atletico Madrid coach Diego "El Cholo" Simeone used the international break to get in a kickaround of his own with friends, but his team suited up in the shirt of Uruguay.
With more than 100 international appearances, it's far too late for the 46-year-old former midfielder to attempt to clear a one-time switch with FIFA, with many Argentina fans continuing to dream that Simeone will one day take the reins of Argentina.