Investment: FFS Estupiñán
Estupiñán is one of the cheapest 86 rated players. He has a good position and league, and is also one of the best La Liga LBs. His FFS card goes out of packs on Friday, and I think he could do well considering he is both usable in-game and for SBCs.
FFS Estupiñán: PS4 26k XBOX 26k PC 28k
Look to sell next Thursday/Friday after WL rewards. List for lazies in the meantime, too. A profit of 3-5k would be solid.