The Manchester United manager Louis Van Gaal has said the club agreed to sell the England striker Danny Welbeck to Arsenal because he did not have the goalscoring record of other strikers at the club.
Welbeck joined the Gunners right at the end of the transfer window after United brought in Colombian striker Radamel Falcao. He scored ten times for United last season.
Welbeck could get his first game in an Arsenal shirt against Manchester City on Saturday.
Arsenal have announced the signing of England international forward Danny Welbeck from Barclays Premier League rivals Manchester United for an undisclosed fee.
The 23-year-old, who is currently with Roy Hodgson's national squad ahead of fixtures against Norway and Switzerland, has signed a long-term deal at the Emirates Stadium to become Arsene Wenger's fifth summer signing - with the deal announced almost two hours after the initial transfer deadline had passed.
He leaves United after coming through the ranks at Old Trafford - developing his craft with loan spells at Preston and Sunderland - but new Red Devils' boss Louis van Gaal has allowed the player to leave in search of regular first-team football.