By Euan Burns Barcelona will attempt to get their season back on track on Sunday when they travel south to face Real Betis, knowing third place in La Liga is within their reach. Xavi Hernandez is under immense pressure as Barca boss now his side have slipped to fourth, albeit with a game in hand over Athletic Club, and were thrashed by Real Madrid in the Supercopa de Espana final. It could get worse if they are beaten in Seville and Atletico Madrid win against Granada, which would see the Blaugrana drop to fifth. For an under-pressure coach, Xavi has spoken to the press very honestly about his…