Welbeck is excited about his switch to London.
He told arsenal.com: "It went right down to the wire in the end. It's difficult to say how I felt at the [different] times of each day because the deal was on and then it was off but at the end of the day I'm an Arsenal player and I couldn't be any happier at the moment."
Welbeck sees Arsenal as a team on the rise: "Yeah definitely. They've done well in recent years and last year we got the FA Cup and I feel like it's time where we could really push on and try and challenge for the Premier League title. I've got one medal and it's something that I really want to add to."
For the big stories and the banter follow us on Twitter: @tribalfootball