The Red Devils sanctioned the deal just hours before the transfer deadline close during the last window after Louis van Gaal had deemed the England international to be surplus to requirements.
The Dutchman had secured moves for Radamel Falcao and Angel di Maria, leaving his attacking options plentiful, which freed the 23-year-old for the switch.
Welbeck has since impressed for the Gunners, with his hat-trick against Galatasaray taking his tally in north London to four – more than any player in the United squad this season.
And after watching other England internationals such as Adam Lallana and Luke Shaw command fees of £25m and £27m respectively, Yorke feels that his old side’s decision was a poor one:
“£16m – that’s a disgrace,” he told the Manchester Evening News. “When Lallana and Shaw have gone for £25m and £27m, that’s pathetic.
“That’s why I cannot understand the market. He had to be a loan deal – especially with Falcao not signing permanently.
“You could let Danny Welbeck go on a year’s loan, get some money and have that option. He’s worth more than £16m in today’s market. Shaw and Lallana – they’re worth that much more than Danny Welbeck?
“I don’t think so. Not with his pace and power.”
Welbeck netted 29 goals in 142 games for United, which is a record Van Gaal suggested was not befitting of a player in a team of such stature.
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