Mats Hummels is the latest Borussia Dortmund player to leave for arch-rivals FC Bayern München, and Robert Lewandowski fully understands his decision.
Hummels will become the third player to make the move, after Mario Gotze and Lewandowski but will play his last game for BVB against his future team-mates in the DFB-Pokal final on Saturday.
In what the World Cup winning defender described as the 'hardest decision of his life', Polish striker Lewandowski feels it was the right move for his future.
"He is one of the best central defenders in the world," Lewandowski told Goal. "He passes the ball upfield very well.
"If Mats and Jerome [Boateng] play together, it could have a very good impact on our attack. Both have brilliant vision, both can play long diagonal passes between the lines. Our attacking game as a team can improve.
"But both have qualities in defence as well, that's for sure. I am looking forward to playing with Mats. I've already played with Mats for four years. I think he just wants to win titles now."