The football field is a unique workplace.That same act in any other workplace would at minimum get you fired and you'd be up on some kind of charge.
There is a long-standing law around players consenting to acts of violence which restricts there liability in terms of physical assaults.
Sexual harassment in the workplace is an entirely different ball game, there is no comparison to what May or May not appear to have taken place in a football field.
Inappropriate touching at the office annual Xmas party is entirely different.
But at the end of the day, you can’t be charged with a criminal offence unless there is a formal complaint from a person who claims to be a victim of a crime. No complaint, no victim, no investigation , no crime.