I'm about to later today. From yesterday's packs I drew six of the seven players that I was missing, and four of them were of the rarest 6 diamonds kind (Kane, Sinani, Jovanovic and Wimmer).

The current proving grounds event has a wildcard prize at the end which will allow me to draw the final missing player. I will have to spend a decent amount of tokens to reach it, but fortunately a few days ago I got as far as lvl 70 in draw frenzy while hitting only three red cards, so that boosted me significantly.