It will be Lucho's decision whether he wants to renew or not. The club will no doubt offer him new contract before the end of the season unless we completely fail and finish like 4th or 5th in La Liga. I think he'll even get a new contract offer if we finish trophyless. I actually thing it's more likely he would renew in that case, because team would be more motivated to win again next season as opposed if we win another double or treble (I still believe we can do that).
I voted yesterday before the game for him to stay because I still like him and because there are no realistically attainable coaches out there that I would consider a serious upgrade over him. Yes, his tactics are not always perfect but to be fair, we have some new players that need time to adapt to the team and we also had injuries to important players (Iniesta, Messi, almost whole defense at some point...) and bad form of others like Busquets and Suarez. I think all of that influenced on our incosistency so far this season but I believe Lucho and team will get things together in second half of the season. It's much better to be "in crisis" (if we can call some bad games as that) now than again have a bad period in April or May next year.