There's no good time to part company with a manager - and it maybe that Ange had both a big personality and had won with the players the Europa League which is something all the players will have on their CV as a major event, and for some that will be their biggest achievement,
Whilst our league form, and acknowledging the effect of injuries such as rarely having our best two CB's playing together, meant a parting of the ways was probably inevitable, its clear from social media posts that a large number of the players are sending him messages of thanks and good will. And not just the ones we might have expected such as Romero - Van de Ven, Danso (who only joined in January so who only worked with Ange for 6 months), Richarlison, Bergvall, Porro and Solanke which I have seen, and I understand from other sites that Bentancur, Kulusevski and Johnson, and no doubt others. It reflects well on them all that the squad had developed a sense of camaraderie and togetherness which will serve us well next season if the new manager can leverage it.
So I'm hoping whoever comes in as manager has a big personality to lift the players and impress them with his tactics and training. That way we can progress