Why was Nottingham Forest’s goal against Tottenham disallowed?

How each outlet headlined it

• Yahoo Sports

  Why was Nottingham Forest’s goal against Tottenham disallowed?
• Guardian Football

  Oliver Glasner argued there was insufficient evidence to disallow Neco Williams’s goal against Tottenham, accusing the video assistant referee Peter Bankes of guessing that the Nottingham Forest defender handled and said ruling it out weakens the officials’ authority. Midway through the second half, Williams stooped to head in on the goalline as Sandro Tonali attempted to hook the ball clear after Morgan Gibbs-White’s deflected effort bobbled towards the net. Glasner conceded at least one angle
  
• BBC Sport

  Nottingham Forest manager Oliver Glasner says his side "lost two points" following their goalless draw against Tottenham Hotspur. The Austrian insists and says Neco Williams' second-half disallowed goal should have stood.