An Antonio Valencia strike and a Jesse Lingard brace ended Arsenal's perfect record at the Emirates this season.
Former Chelsea midfielder Frank Lampard also thinks Welbeck made the wrong decision by getting to his feet.
Arsene Wenger admits he was "angry and disappointed" after Arsenal lost 3-1 to Manchester United despite producing an "excellent performance".
The Gunners gave it their all and if not for David de Gea's heroics and their own profligacy in the attacking third, they could have come away with at least a point.
Alexis Sanchez had picked up a minor hamstring injury during Arsenal's midweek win over Huddersfield, but is ready to play against United on Saturday.
West Bromwich Albion have slapped a £30m price tag for Jonny Evans. His potential sale can help them use those funds in bringing new players to the club in January.
Mesut Ozil is in the final seven months of his contract with Arsenal and has been linked with moves to Manchester United and Barcelona.
Arsene Wenger has described news of Santi Cazorla's ninth achilles operation as "disastrous" and "sad" and is unsure how badly it will affect plans for a January comeback.
Arsenal forward Alexis Sanchez was subbed off with a hamstring complaint against Huddersfield but should be fit for Manchester United clash.
Arsene Wenger was not happy with the overall performance of Arsenal despite the Gunners recording their biggest win of the season.
Former Chelsea goalkeeper Cech, 35, has played every single minute of Arsenal's Premier League campaign so far this season.
Arsenal have made major backroom appointments following the arrivals of Borussia Dortmund chief scout Sven Mislintat and Barcelona's director of football Raul Sanllehi.
Antoine Griezmann has admitted that he rejected Arsenal when the Gunners made another approach for his services after handing him a "blow" in 2013.
Arsene Wenger is undecided over his Arsenal team to face Huddersfield as insists he has the squad in order to rest in time to face Manchester United.
Alexis Sanchez and Mesut Ozil will stay at Arsenal beyond the end of the January transfer window, according to Arsene Wenger.
Theo Walcott missed Arsenal's last three games across all competitions due to an illness, but could return for the Gunners' clash against Huddersfield.
Mesut Ozil missed Arsenal's victory over Burnley and Arsene Wenger does not expect him back for the midweek clash against Huddersfield Town.
The Gunners failed with a £90m bid for the Monaco winger on transfer deadline day in the summer after they failed to convince him to move to north London.
Mesut Ozil is wanted by Manchester United manager Jose Mourinho, while Barcelona are also interested in signing the German international. He will be a free agent next summer.
Jack Wilshere is close to entering the final six months of his contract with boyhood club Arsenal and wants to hold talks with Wenger before deciding next move.
Gabriel says he felt that Arsenal manager Arsene Wenger was using him more as a back-up during his time at the Emirates.
Arsene Wenger has maintained two different teams for the Premier League and the cup competitions and is hoping it will help them during the busy festive period.