Arsenal snuck a narrow 1-0 victory over Manchester United to make the perfect start to their Premier League campaign at Old Trafford.

A much-improved Manchester United scrapped with Arsenal but fell victim a goalkeeper error in a 1-0 season-opening loss at Old Trafford on Sunday.

MANCHESTER, England, Aug 17 (Reuters) - Arsenal's Riccardo Calafiori headed home an early corner, aided by a weak challenge from goalkeeper Altay Bayindir, to earn a 1-0 victory at Manchester United in the Premier League on Sunday, spoiling the hosts' season opener.

Yet the training absence has remained unexplained until now, with Sami Mokbel reporting for the BBC that it was due to illness. Mokbel writes that Zubimendi was struck by a severe sickness bug ahead of the United game, and he ended up missing two full training sessions as a result.

Manchester United vs Arsenal proved an unusually high-tax affair for Week 1 of a Premier League season, and it was ultimately an error that divided the sides at Old Trafford.

Everything you need to know ahead of Sunday's Premier League clash at Old Trafford between Manchester United and Arsenal

Six players debuted for their new clubs when Arsenal defeated Manchester United 1-0 on Sunday, here's how they all performed

Leeds United started life back in the Premier League with a 1-0 victory over Everton at Elland Road on Monday night, and they take on Arsenal next at Emirates Stadium on Saturday. Leeds will be facing one of their fiercest oppositions this season this weekend given how impressive the Gunners have been in the last three seasons.

Manchester United have signposted Sporting captain Morten Hjulmand as a potential midfield reinforcement after their chase to secure the signature of Carlos Baleba ended last week. The Athletic reports that United manager Ruben Amorim has a strong relationship with the player from their time together in Portugal.