Danny Welbeck has completed his move to Arsenal.

The England international leaves boyhood club Manchester United for €20M.

Arsenal have signed the player on deadline day - with the aid of an extension - in the wake of an injury to Olivier Giroud which left youngster Yaya Sanogo as the only natural centre-forward in the squad.

Welbeck has scored just shy of 30 goals in just under 140 games in all competitions during his Man United career.

The 23-year-old graduated through the club's youth ranks but with Radamel Falcao's impending arrival at Old Trafford, chances were due to become limited for Welbeck.

It's official. @Arsenal have signed Danny Welbeck from Manchester United: http://t.co/obyyFMbDW4 #WelcomeWelbeck pic.twitter.com/6yD9nbSkFi

— Arsenal FC (@Arsenal) September 1, 2014