Age: 21 Position: DC/DL Role: Limited defender / central defender / ball-playing defender Club: River Nationality: Colombian Value: £2.3 million Price Tag: £5 million If you're a true fan of the Football Manager series this man should be very familiar to you. Eder Alvarez Balanta has been a highly sought after wonderkid in the last couple of Football Manager titles. Balanta, simply put, is an awesome young central defender and comes at a very reasonable price at the start of the game. If you have a bit of money in your transfer kitty, buying this kid straight away is a must. Eder tends to take a bit of time to develop, but your patience will be rewarded, as he evolves into central defender with flawless marking, solid heading and tackling, very good speed, strength and top notch mental attributes. With many of his statistics reaching 19 or 20, he can make you feel very safe at the back. Which other essential FM 2015 purchases would you add to this list? Share your picks below in the comments thread.