Sunderland 's Adam Johnson arrested at his mansion by police on Monday . The 27-year-old subsequently released on bail . The Black Cats signed Johnson from Manchester City three years ago . The winger was arrested on suspicion of having sex with an underage girl . Sunderland suspend Johnson pending the outcome of a police investigation . Player 's girlfriend to stand by him , her family insists he is '100 % innocent ' Comment: Johnson arrest was my toughest day in management . READ : Johnson was arrested for underage sex after 'teenager boasted about relationship and her father found out '
Sunderland 's Adam Johnson arrested at his mansion by police on Monday . The 27-year-old subsequently released on bail . The Black Cats signed Johnson from Manchester City three years ago . The winger was arrested on suspicion of having sex with an underage girl . Sunderland suspend Johnson pending the outcome of a police investigation . Player 's girlfriend to stand by him , her family insists he is '100 % innocent ' Gus Poyet : Johnson arrest was my toughest day in management . READ : Johnson was arrested for underage sex after 'teenager boasted about relationship and her father found out '