#2 Antoine Greizmann - Atletico Madrid to FC Barcelona
Over the decade, Atletico Madrid have done a miraculous job of producing some of the most important players of the modern era. From the rise and fall of Fernando Torres to a powerhouse known as Diego Costa, and many more. As a matter of fact, they still stand as the toughest competitors to both Barcelona and Real Madrid.
However, none could withstand the impact of this young forward, ranked among Lionel Messi and Cristiano Ronaldo, Antoine Greizmann is not just a potential future player of the year candidate, but also a merciless goal-scoring machine.
Such was the case that this World Cup winning Frenchman was being chased by Manchester United and FC Barcelona. Although the 27-year-old showed interests in the Barcelona deal, his club, on the other hand, didn't want to get rid of the charismatic enigma.
After much speculations and a handful of options, the left forward was all set to replace former Barca player Neymar Jr. However, somewhere during June, the Atletico Madrid forward decided to stay at his current club. No matter the sum, or the wage, he was here to stay. Leaving Barcelona back to a square one.
His inclusion at the Camp Nou would have easily made them the best side in the world, bringing former glories from the Guardiola era. With Phillipe Coutinho inter-playing Greizmann from the left-mid position, it would've been a disaster for the rivals, forming a trio with Suarez and Messi too would have ignited fear for the opposition.