The thing I find really ironic about Luiz wanting to join a bigger club is that when he actually plays well, which is never a given, we are a much better team. If he actually played every week like he has the last couple of performances, we'd stand a chance of being much higher in the table and being the bigger club he aspires play for.
But this is often the way with this type of player / situation. Grealish wanted out just as we were looking to make a push for Europe, and looked good for it (unlike now). Barry and Milner both jumped ship for Citeh when we were pushing for Champions League football.
For a team game, top tier football is such a "me" sport. Surely Luiz can see how good we could be if he (and others) played to his/their ability every week. Which obviously increases his chance of playing for Brazil, or in Europe, or whatever it is he's actually looking for.