Following Lionel Messi’s clash with Sergio Ramos at the end of the first half, Gerard Pique appeared to make a gesture towards Real Madrid’s supporters.
As he walked down the tunnel, the centre-back made a talking gesture with his hand towards the crowd on a couple of occasions.
The level of mutual distaste between the two parties was made clear earlier in the week with Pique having been the subject of some rather vulgar chants from sections of Los Blancos’ support.
Last month he had criticised Real Madrid for complaints over refereeing.