Leaders Arsenal face a stern test of their title credentials in the north London derby at top four hopefuls Tottenham, while Sheffield United are on the brink of relegation. Phil Foden issued a warning to Manchester City's title rivals after the champions' "frightening" attack inspired a vital 4-0 demolition of Brighton. Pep Guardiola's side could not afford to slip up at the Amex Stadium on Thursday as they try to overhaul Arsenal in the title race. And City rose to the challenge as Kevin De Bruyne's header put them in front before Foden netted twice in the first half.