article_snippet: Chelsea is a known admirer of the Brazil international having tried to land the midfielder in the previous transfer windows.
article_snippet: Chelsea manager Jose Mourinho is known to be an admirer of the midfield player Douglas Costa .
article_snippet: Douglas Costa has dual Brazilian and Portuguese nationality, removing any potential work permit problems .
article_snippet: Despite playing for Brazil, Douglas Costa has dual Portuguese nationality so should not face work permit issues.
highlights_snippet: Jose Mourinho is a known admirer of the Brazil international midfielder .
  