1) There has been plenty of talk about Bissouma's situation on social media today. Just search "bissouma assault" on twitter. Just because it hasn't appeared on your timeline doesn't mean it isn't there. And that's a fraction of the discussion that would have taken place had he moved to Manchester United.
2) We are very much associated with the Giggs situation. Because aside from his past ties to the club, we made the decision to invite him into the director's box for Ronaldo's homecoming despite him having already been charged with assaulting two women at that point. And were criticised for doing so at the time. If he is convicted in the future, that criticsim will re-emerge.
3) If you think the Greenwood and Ronaldo situations haven't negatively impacted the club's reputation then you can't have been on social media over the last year. It's been a constant source of negativity and criticism towards the club and the attitudes of (some) United fans. As for the media, while they're currently forced to be circumspect due to the ongoing legal process that won't always be the situation. With it being extremely likely that Greenwood will not play for the club again even if he isn't prosecuted, there will be plenty of opportunity for the club to
again be criticised for its handling of the situation once that comes to a head. Even more so if in the meantime we opt to sign another player with allegations against him.