Welbeck left Old Trafford on transfer deadline day, signing a long-term deal with the Gunners for a fee believed to be in the region of £16 million.
The young forward had found opportunities limited in Manchester under new head coach Louis van Gaal, and having been utilised on the left-wing by former boss David Moyes, Welbeck believed he was finally deserving of a chance as the first-choice striker.
However, the presence of Wayne Rooney and Robin van Persie limited chances leading the line last term, and the signing of Radamel Falcao in the summer gave further hints that the 23-year-old was surplus to requirements at Old Trafford, and it was considered quite a coup for Arsenal to sign the forward for such an acceptable fee.
The England international has started his career in North London in impressive form, netting five goals in 12 games in all competitions, including his first ever professional hat-trick in a 4-1 Champions League victory over Galatasaray. He has been offered the chance to play in his natural position by head coach Arsene Wenger, and, although the Gunners are struggling as a team unit, the form of Welbeck - along with fellow summer signing Alexis Sanchez - has been one of the positives to be taken out their season.
With the Red Devils struggling for form themselves, David Moyes - who himself limited opportunities for Welbeck - told talkSPORT that he wouldn’t have sold the forward if he were still in charge at Old Trafford.
When asked if he was surprised by the former Red Devils striker’s form for Arsenal, Moyes replied: “I’m not surprised one bit.
“He was an important player for me last year. We played him in all the big games.
“The big problem was he had Robin van Persie and Wayne Rooney in front of him, so he had to dislodge all those players to get into the side.
"You make your own decisions. Every manager is entitled to their own opinion, but it wouldn’t be mine.”
Welbeck has also excelled on the international stage since his transfer, netting five goals in just three games in England’s qualification campaign for the 2016 European Championships, and Moyes believes that the added confidence he is getting from playing is improving his international form, and earning him respect that he has been deserving of for a long time.
“The move has helped him as he is also scoring for England, and he’s earning respect through it.”