LONDON, May 9 : Manchester City sent out a defiant message to Premier League title favourites Arsenal as Pep Guardiola's side scored three second-half goals to beat visiting Brentford 3-0 on Saturday. Anything other than a win would have left City's hopes of reclaiming the crown hanging by a slender thread and it looked unlikely in a subdued first half. But a superb strike into the top corner by Jeremy Doku and further goals by Erling Haaland and Omar Marmoush earned City the win that cut