Kim Min-jae, a South Korean defender, was signed by Bayern Munich on Tuesday from Italian champions Napoli.
Bayern did not disclose the transfer fee, only that the 26-year-old was signing a five-year contract.
Kim joined Napoli in the summer of last year, where he helped the team win the Serie A.
On Instagram, he also said goodbye to Napoli and departing coach Luciano Spalletti.
Kim played in China and for Fenerbahce in Turkey before joining Napoli. He has 49 international caps overall.
Bayern also introduced Christoph Freund, an Austrian, as its new sporting director.
Freund, 46, will join from Austrian champion Red Bull Salzburg, where he spent eight years, at the conclusion of the summer transfer season.
He takes over replacing Hasan Salihamidzic, a former player for the organization who was fired in May alongside previous chairman Oliver Kahn as a result of Bayern’s generally subpar season.
At the end of March, Salihamidzic and Kahn gambled by firing coach Julian Nagelsmann, but the move was not totally successful.
The team lost in the quarterfinals of the German Cup and Champions League, but managed to win the Bundesliga despite Borussia Dortmund’s error on the final day of the regular season.