Louis van Gaal did not leave the bench as Arsenal beat Manchester United . Radamel Falcao brought on Michael Carrick , Phil Jones and Adnan Januzaj . Danny Welbeck , a former United striker , scored Arsenal 's winning goal .
Radamel Falcao did not leave the bench as Arsenal beat Manchester United . Louis van Gaal brought on Michael Carrick , Phil Jones and Adnan Januzaj . Danny Welbeck , a former United striker , scored Arsenal 's winning goal .