Grimaldo would be the best left back we could get from everything I personally have seen. He looks like the perfect Pep fullback on and off the ball. He's quick, agile, defends positively (as in proactive rather than reactive), seems to read the game very well in terms of team shape and very rarely seems to get beaten in one on one challenges but above all he seems to always have time and space on the ball because he plays with his head up, always picking the right pass whether it's down the line or cutting inside.