The final El Clasico of the season between Barcelona and Real Madrid could have some serious implications in La Liga as the two square off on Sunday. Currently, Barcelona lead the league by four points over their rivals.

Real Madrid penaltyAn error at the back sees Madrid into the box.Wojciech Szczesny snaps into Kylian Mbappe to give away a penalty and a bruise, to be sure.But VAR is looking to see whether there's a Madrid offside in the build-up.

Before the Copa del Rey final last month we saw unprecedented drama, with referee De Burgos Bengoetxea tearfully recalling the effect of criticism from Real Madrid TV and other outlets on him and his family and Madrid reacting by boycotting all the official preview events.