Soccerbase have him on 4 yellows, however 2 of them were in games for Huesca, they've got him mixed up with David Lopez Silva. I am pretty certain Spanish Dave only has 2.
We are well past the 5 yellow card cut off. I am pretty certain its 5 bookings before Dec 31st mean a 1 game ban, after that it's 10 bookings by 10th April. If I am correct then there is nothing to worry about as we've only got 3 games between now and the cut off date.