The Reds face the runaway La Liga leaders in the first of a two-legged Europa League play-off in Thursday's 17:45 GMT kick-off.
It is a perfect opportunity for United to show our capabilities against a team that is currently looking like one of the best in Europe, despite being knocked out of the Champions League earlier in the campaign.
Ten Hag's impact, on and off the field, has been obvious in his first season since leaving Ajax for Old Trafford, and his pedigree with the Dutch club in European competition in the past suggests he will have his side set up to hopefully post a positive result to take back to Manchester next week.