العامل الأساسي

• San Mamés home advantage is a major factor — Athletic consistently perform better in front of their own fans
• Confirmed starting XI fields Nico Williams, Iñaki Williams and Guruzeta — one of La Liga's most dangerous attacking trios
• Oihan Sancet and Aymeric Laporte add quality in midfield and defence for the hosts
• Osasuna's Ante Budimir is a physical threat who can score and hold up play effectively
• Osasuna's 2-2 away draw at Alavés shows they can create and score on the road, keeping BTTS alive
• Athletic's recent away defeat to Getafe suggests defensive vulnerability when not at home