The way Trossard played today is exactly how we should use Eze i.e starting out wide but constantly drifting in central areas with the LB pushed up wide to provide width. This will see him occupy similar areas as he did for Palace.I think we were all expecting him to be used that way. Starting him out wide and expecting him to hug the touchline is a very poor use of his qualities.
He's a low touch player, it's no big deal if we start him out wide. He can pick his moments to come inside and provide those moments of magic we all know he's capable of. Trossard was red hot in Nov/December, so he couldn't be dropped but that's no longer the case. Therefore, I am hoping to see Eze get a consistent run in the side even when Ode/Havertz are fully fit. Best way to do it is starting him out wide and letting him play like he did for Palace (by drifting inside), with the LB overlapping.
Edit: Thinking about it, Hincapie looks more suited to the overlapping LB role than Cala but the latter will likely be 1st choice again when fully fit, so I am not sure. Anyway, we can use them in pairs: Cala--Trossard or Hincapie--Eze