#5 Lionel Messi
Lionel Messi has had to witness Real Madrid's exquisite dominance in Europe. With 3 back to back UCL titles, Los Blancos have been the team to beat in Europe. If there is anything the Argentine wants at Barcelona, it is to end Madrid's dominance in the UCL.
One man who has been the epitome of Real Madrid's UCL success is his nemesis - Cristiano Ronaldo. The Portuguese is way ahead in terms of goals scored in UCL, and has been the driving force behind Real’s back to back UCL titles.
With Ronaldo set to leave, the Madrid club will find it hard to repeat their heroics in Europe's elite club competition.
With Real bound to be vulnerable at first due to Ronaldo's switch to Juventus, this could be the best opportunity for Lionel Messi to guide Barcelona back to the top position in Europe.
With Ronaldo taking a lead in their storied rivalry, it seems Messi will benefit from the Portuguese's switch to Juventus as players have found settling into a new side a hard task at first.