Alvaro Arbeloa has urged his Real Madrid players to show the right kind of fight in Sunday’s El Clasico against Barcelona . A turbulent week could end in the most miserable way possible for Real, with bitter rivals Barca needing just a point to clinch the LaLiga title with three games to spare. The Catalan outfit are currently 11 points ahead of second-placed Real, who are lurching from crisis to crisis. On Thursday they fined Federico Valverde and Aurelien Tchouameni 500,000 euros each following a training-ground bust-up. Captain Valverde ended up in hospital with a head injury and will be sidelined for up to two weeks. The disciplinary proceedings are the latest in a string of recent controversies at Real, with defender Antonio Rudiger reportedly apologising to the squad for another training-ground clash. Star striker Kylian Mbappe was then reported to have been involved in an angry exchange with a member of the club’s coaching staff who was acting as an assistant referee in a training match.…