MSG start, Ter Stegen in goal... Barca's potential line-up for the El Clasico

The most notable change could be at the back, with Lenglet's inconsistent performance against Real Sociedad possibly opening the door for Umtiti to join Piqué in central defence.

With El Clásico fast approaching, both Ernersto Valverde and Zinedine Zidane have decisions to make over the the starting elevens they will field at the Camp Nou. 

The biggest change for Barcelona could be in defence. Clement Lenglet's unconvincing performance at Reale Arena in his side's 2-2 draw against Real Madrid could open the door for Samuel Umtiti to join Gerard Piqué in central defence. 

Valverde has already praised the Frenchman after his return from injury and he could give Barcelona some much-needed cut and thrust against Real Madrid. 

The rest of the Barcelona eleven is likely to remain unchanged. In goal, Ter Stegen is one of the first names on the teamsheet, despite his costly error against La Real, and in defence Sergi Roberto, Piqué and Alba will almost certainly protect the Barça goal. 

The midfield will also have a similar look, despite a shaky performance in San Sebastián. Valverde will look for control, above all else, and Busquets-De Jong-Rakitic combination is unlikely to be tweaked. 

In attack, with the front three starting to click as the weeks pass, young pretenders Ansu Fati and Carles Pérez will have to wait before they get a look-in. Moreover, Messi has now scored 14 (12 in LaLiga and two in the Champions League); Suárez 12 (9+3) and Griezmann y (6+1), numbers that are starting to count.