Man Utd failed to register a shot on target in the Europa League for the very first time as they were held to an uninspiring 0-0 draw against AZ Alkmaar.
Team news, key stats and predictions as AZ Alkmaar host Manchester United in the Europa League group stages.
Man Utd face a gruelling Europa League group stage trip to Kazakhstan while Celtic have a rematch against Cluj, who eliminated them from the Champions League.
Dutch side AZ Alkmaar suffered a partial roof collapse at their AFAS Stadium on Saturday after strong winds hit the Netherlands.
Ajax moved three points clear at the top of the Eredivisie table after a 4-2 home win against Vitesse Arnhem.
Ajax edged three points ahead of PSV Eindhoven in the Eredivisie title race with a hard-fought 1-0 win at FC Groningen.
Klaas-Jan Huntelaar scored a hat-trick as Ajax moved three points clear at the top of Eredivisie with a comfortable 6-2 victory against struggling Excelsior.
Ajax increased the pressure on their title rivals PSV Eindhoven by reclaiming top spot in the Eredivisie with a comfortable 4-1 victory at Willem II.
AZ Alkmaar moved up to third place in the Eredivisie after a 1-0 win over Groningen.
Hirving Lozano's late goal gave PSV victory against VVV Venlo in what could prove to be a pivotal day in the Eredivisie title race.
Robin van Persie scored a hat-trick as Feyenoord won 4-0 at home against FC Emmen in the Eredivisie on Sunday.
Ajax closed the gap on Eredivisie leaders PSV Eindhoven to two points after recording a thumping 5-1 victory at ADO Den Haag.
PSV battled back to snatch a 2-2 at Heerenveen thanks to Donyell Malen's goal in the fifth minute of stoppage time.
Feyenoord missed the chance to make ground on the Eredivisie top two after losing 3-1 at PEC Zwolle on Saturday.
PSV Eindhoven opened up a five-point gap at the top of the Eredivisie following a comprehensive 4-0 victory at nine-man Heracles Almelo.
Third-placed Feyenoord maintained their five-point cushion over the chasing pack with a 1-0 win at struggling Groningen in Eredivisie.
Ajax kept the pressure on Eredivisie pace-setters PSV Eindhoven with a comprehensive 7-1 victory over Excelsior at Stadion Woudestein.
Ajax took advantage of Jeremiah St Juste's early dismissal to record a 3-0 win against Feyenoord in the Eredivisie on Sunday.
PSV Eindhoven hit Emmen for six to make it nine wins from nine at the top of the Eredivisie.
Ajax built on their midweek Champions League draw with Bayern Munich by reclaiming second place in the Eredivisie with a 5-0 win over AZ Alkmaar.