The profile of that role might suggest so. With guys like Caceres and Isla who have potential to be regular starters jostling for roles, you cant expect Lucio or his replacement to expect much more than the odd appearance and Coppa regular berth.
Just my opinion.he wanted to play so he must have been angry about not playing...
it does nothing good to have one like that in your dressing room.
Because all he could do was to complain,and he did,to the media few times...
So for sure all knew he was unhappy.we don't need unhappy guys in the squad