Article continues below advertisementOK! can reveal David Beckham has made clear amid his bitter family feud, there is one line he will never cross - removing the tattoo he got for his eldest son, Brooklyn, even though his estranged boy appears to have erased his own body art tribute to his father.Ex-footballer David, 50, recently shared a photograph on Instagram showing the word "Buster" inked on his neck - a nickname he has long used for Brooklyn, 26.Article continues below advertisementSource: MEGADavid Beckham shared a photo of his tattoo tribute to his son Brooklyn Beckham.