Who: Real Madrid vs AlavesWhat: La LigaWhere: Santiago Bernabeu, Madrid, SpainWhen: Tuesday, April 21 at 8:30pm (19:30 GMT)How to follow: We’ll have all the build-up on Al Jazeera Sport from 16:30 GMT in advance of our live text commentary stream.Real Madrid have some soul-searching to do after the dramatic defeat by Bayern Munich in the Champions League quarterfinals last week left the 15-time European champions staring at the prospect of a second successive campaign without silverware.Recommended Stories list of 4 itemsend of listThe Champions League had represented Real’s last realistic route to a trophy. Their La Liga challenge has faltered, with the Madrid side trailing Barcelona by nine points with seven matches remaining.Defeat by Bayern followed a shock Copa del Rey exit to second-tier Albacete in January and domestic stumbles that have drained momentum. When Real host Alaves in La Liga on Tuesday, it will be a month since they last won in any competition.Barcelona, meanwhile, could clinch the title for the second successive year when they host Real at the Camp Nou on May 10 with three games to play, a twist that would compound the pain for their old rivals.For Real to salvage the title, they would require a flawless finish and a collapse from Barca.Alaves are battling to stay in La Liga, as just a point separates them from the relegation zone.Arbeloa’s job under threatMadrid’s season began unsteadily with the appointment of Xabi Alonso, who lasted six months before being replaced by former teammate Alv …