#1. Leon Goretzka to Bayern Munich
The masters of 2018 summer transfer market, Bayern Munich once again pouched a top player from their German rivals.
Considering one of the best young box-to-box midfielders, Leon Goretzka decided to move to Bavaria for free this summer from Schalke.
With Arturo Vidal sold, Bayern Munich still have eight midfielders for the upcoming season.
But the quality of Goretzka is too good for a free deal. It is undoubtedly the best transfers Bayern Munich have made in recent years after the free transfer of Robert Lewandowski in 2014.