That's unfortunate mate but simple fact is the card has lot of supply but no buyers.  Lot of Euro and UCL cards has the same issue.  The price changes within a range every 3 hours, so you might have to keep changing actively so that you r top of the lot and people can only buy if Ur price is in that min/max range.  My euro Ruiz took nearly 2 months to sell and euro leao and UCL carvajal were also tough sales.

You might try ranking up if there is less competition in the next tier but I don't think EA will do anything to intervene in the market as that's a demand/supply issue.