The 23-year-old completed a contentious £16m move to Arsenal on transfer deadline day on Monday, penning a five-year deal with the north London side.
I’ve seem him get into good positions but he doesn’t seem comfortable in those positions where a lot of strikers would stick the ball away
Welbeck scored nine goals in 25 Premier League appearances for the Red Devils, but was deemed surplus to requirements following Radamel Falcao’s loan switch.
And Leeds United legend Giles, who won two top-flight crowns during his decorated career, questioned whether Gunners forward Welbeck will ever be a clinical finisher.
Giles told Newstalk: “I think he is Manchester United mad. I don’t think he wanted to leave but Van Gaal made the decision that he doesn’t think he is good enough for United with Van Persie, Rooney and Falcao coming into the side.
“He has got a lot going for him but I don’t know if he will ever be a good finish, a clinical finisher. I’ve seem him get into good positions but he doesn’t seem comfortable in those positions where a lot of strikers would stick the ball away.
“Whether he will ever be a really natural goal-scorer, I have my doubts.”
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