Furious Beckham ready to confront LA Galaxy pal Donovan tomorrow
Beckham, who has been on loan to Italian giants AC Milan, revealed he would be seeking to talk to Donovan.
Beckham said: "It's unprofessional. In every football player's eyes throughout the world it would be unprofessional to speak out about a team-mate, especially in the press and not to your face.
"In 17 years, I have played with the biggest teams in the world and the biggest players and not once have I been criticised for my professionalism.
"It's important to get this cleared up."
Beckham, recently recalled to the England set-up by manager Fabio Capello, added: "Me and Landon will talk, but that will be a private conversation."