Bayern Munich sign Douglas Costa from Shakhtar Donetsk

The German giants posted photographs of the 24-year-old signing his contract after a deal worth 30 million euros (£21.3 million) was confirmed.

Bayern executive Jan-Christian Dreesen told the Bundesliga side's official website: "We are very pleased we were able to sign Douglas Costa.

"His five-year contract to 2020 also shows we are planning for the future. We hope he gets accustomed to life in Munich quickly and will improve the team."

A statement on the Ukrainian club’s website confirmed that the midfielder had agreed terms with the German champions.

“Shakhtar Donetsk and Bayern Munich have agreed all the necessary formalities regarding Douglas Costa’s move to the German club,” read the statement.

“The transfer fee for the Brazilian midfielder is 30 million euros.

“Shakhtar thanks Douglas for the time spent in the team and wishes him every success with the new club.”

Costa also posted a message on his Instagram page to confirm the move.

“Hello, I come here to announce that my story in @fcshakhtar is over,” Costa wrote.

“I hope all fans understand my decision, but it is part of the evolution of each player. Here is my love for each of you, who have always been with me in good and bad times."

“We achieved many things together, but we cannot forget the losses which served to help us grow. My sincere thanks for receiving me so well from the day I arrived. And I’m sure was the best choice that I made five years ago when I decided to join Shakhtar. It was an honour to wear this victorious shirt!

“I hope we can return to our home Donetsk as soon as possible. Although it is very hard to say, see you soon! I love you guys and will take all of you in my heart wherever I am.”

Bayern had to do something to bolster their midfield after having crashed out of the Champions League at the hands of Pep Guardiola's former team Barcelona. Costa will provide a great deal of skill and athleticism in the middle of the park for Bayern but it will be asking too much to expect him to suddenly make Bayern better than Barcelona and Real Madrid. It was Guardiola's defence which let them down so badly again on the big stage in Europe and so another midfield acquisition may not improve his side too significantly.