Nicola Murru is another cheap option but the potential to become a top left back is certainly there. The Italian comes with the added bonus of being able to fill in at right-back, making him a good backup option as he develops. The 20-year-old has stats in all of the right places, and if you actually look at the few of his stats below 10, they're all non-essential for a player in his position. He needs experience and training, but Murru could be an immense pick up.