Athletic Bilbao host Manchester United at San Mamés on Thursday night in what promises to be a fiercely contested UEFA Europa League semi-final first leg. It’s a clash steeped in contrast—tradition versus transition, continuity versus recalibration.

Diogo Dalot has joined long-term absentees Lisandro Martinez and Joshua Zirkzee on the sidelines but Toby Collyer and back-up goalkeeper Altay Bayindir might make the matchday squad after taking part in training on Wednesday too.

Ernesto Valverde's Bilbao are pushing for Champions League qualification in La Liga and have the carrot dangling in front of them that if they win this semifinal they will play in the Europa League final at their home stadium,

A treble is on the cards if they can get past Inter and beat either Arsenal or Paris Saint-Germain in the Champions League Final.MORE — Barca win Copa del Rey | El Clasico player ratingsBarca haven't won the UEFA Champions League since a 2014-15 triumph over Juventus gave them five European Cups.