So I acquired an evolution token called 'Icon Rise' from an SBC challenge having to trade lots of good players. The expiry date of that evolution stated 14 days.
Following that, I sold many players to make enough coins to buy a player that fits the evolution requirements (Wayne Rooney).
However, there is what seems to be a bug with the evolution as it keeps saying "this evolution has expired" although it states "5 remaining days!"
So, now I am stuck having done everything and sold many players for this evolution and now it fails to work! very frustrating!