2. Cesc Fabregas
You’d be hard-pressed to find a more talented 16-year-old in football than Cesc Fabregas in his debut season for Arsenal. The Spaniard was simply a phenomenon in his early years in London, breaking into the first team at 15. Wenger believed in him so much so that he quickly graduated from League Cup games to Premier League appearances. The midfielder would then evolve into a locker room leader and the club’s captain.
However, his boyhood club would come calling and Fabregas’ head was completely turned afterward. He reportedly went on training boycotts and made it clear to the manager that he wanted to go back to Spain. At Arsenal, the Spaniard only won one FA Cup, at FC Barcelona he won a league title and five domestic cups. To make matters worse, Cesc would join Chelsea in 2014 and win the coveted PL title he didn’t come close to at Arsenal. Such was the uniqueness of Fabregas’ ability, this transfer saga hurt Arsenal fans the most and seeing him do so well after the Emirates added insult to injury.