8. Luke Shaw – Manchester United
One of the Top 10 Most Expensive Teenagers in Football History and the op 10 Most Expensive Defenders in Football History. Luke Shaw joined The Red Devils from Southampton for a massive £30 million fee, and just turning 19 in the summer of the Transfer window. The English man was believed to be one of the best left backs in the world, however, he is yet to prove that his worth the £30 million Manchester United forked out for him, as he has not shown his full abilities at Old Trafford.
