It's not a good time to be Quique Setién.

Barcelona have fallen apart since La Liga's return, allowing Real Madrid to move ahead in the title race. The football isn't pretty and players aren't impressed, and it's gotten so bad that the boss could even be fired before the season comes to a close.

Let's take a look at who could replace him.

1. Mauricio Pochettino

Let's just get this one out of the way. Mauricio Pochettino is probably the most appealing available option out there, but he's not joining Barcelona.

He would be the ideal man for the job, but he has categorically ruled out sitting in the Camp Nou dugout because of his loyalty towards his former side Espanyol.

Next.

2. Eusebio Sacristán

Eusebio Sacristán won four La Liga titles as a player with Barcelona before spending four years as manager of the B team between 2011 and 2015. He even got his badges as part of Frank Rijkaard's backroom staff at Camp Nou. If Barça want someone who understands the club, Eusebio is the man for the job.

However, the problem with Eusebio is his less-than-impressive record away from Barcelona. He underwhelmed at Real Sociedad and has been out of work since last summer, when his Girona side were relegated.

He hasn't put together the kind of record which a Barcelona manager should have, so this job will probably be too far away.

3. Xavi

Does Xavi want to go back to Barcelona? Yes

Do Barcelona want him back? Yes, they tried to get him before they moved for Setien. 

Is Xavi going to go back while this board of directors – and this president – are in place? Probably not, no.

4. Roberto Martínez

A target to replace Ernesto Valverde before Setién arrived, Roberto Martínez's name is still thrown about when it comes to discussing Barcelona's next move.

Still under contract with the Belgium national team, Martínez would definitely be a shock appointment. He's by no means a bad manager, but his record doesn't exactly make him look like a dream for Barça.

His time at Everton ended disastrously, and although his Belgium side are one of the best around, there are better options around.