2018 Black Friday
None of the footballers are included in the 40-card base set, which is made up of 25 basketball players and 15 baseball players. There's also a 40-card base set of american football players. The footballers appear in the Panini Collection set and there are a few Diamond cards similar to the VIP Gems cards issued at the National last summer but none of the cards carry conventional card numbers, instead the card numbers are alpha characters, usually the players initials. For this reason I won't be attempting to compile a checklist but I will add any new information or images that I come across.
UPDATE (02-12-2018 10:47): Lionel Messi numbered to 10 added.
UPDATE (04-12-2018 13:11): Cristiano Ronaldo card numbered to 25 (25/25) added.
Panini Collection - #/199
Panini Collection - #/25
Panini Collection - Cracked Ice #/10
Panini Collection - Checkerboard 1/1
Panini Collection - Autograph
Panini Collection - Autograph - Checkerboard 1/1
CR. Cristiano Ronaldo (Portugal)
LM. Lionel Messi (Argentina)
PELE. Pele (Brazil) with Joe Namath (New York Jets)
Diamond Collection - Purple #/5
Diamond Collection - Gold 1/1
CP. Christian Pulisic (USA)
JH. Javier Hernandez (Mexico)