Absolutely zero to suggest that Kalvin Phillips has a questionable character or is likely to create a negative atmosphere. Despite having had a difficult 12 months he's never shown himself to be anything other a pretty positive guy who is working hard to get his opportunity. Even when Pep threw him under the bus by publicly discussing his weight, he put on a brave face about it. Also speaks volumes that the club haven't tried to force him out despite having seemingly decided they might not have too much use for him after all.
Seems to be a small section of our fanbase who are frustrated that this signing hasn't worked out so far and their way of dealing with that is to try and smear his character or question his professionalism. Personally think any frustrations surrounding this situation are probably best aimed at those responsible for the signing rather than the player himself. Or even better, why are people so arsed about it anyway? His presence inside the club has literally no impact on anyone's life outside of it.