Grealish came off the bench to create City's winning goal at an injury-hit Chelsea on Thursday, sending in a pinpoint cross for fellow substitute Riyad Mahrez to tap in and move Pep Guardiola's side to within five points of leaders Arsenal.
Jack Grealish said he is "nowhere near" full fitness as he continues his recovery from a groin injury but is confident fans will see the best of him when he returns to the side.
Manchester City have signed England midfielder Jack Grealish on a six-year contract after paying the 100-million pound ($139.27 million) release clause.
Grealish said captain Harry Kane is the best player he has ever played with and tipped the Tottenham Hotspur forward to break the Premier League scoring record.
Southgate said some fans do not understand the message behind players taking a knee before matches.
Southgate said Grealish and Mount can play together for the national team on the evidence of their performances in Thursday’s 3-0 friendly win over Ireland.
Grealish has welcomed comparisons to former England midfielder Paul Gascoigne after impressing on his first international start.
Captain Jack Grealish struck Aston Villa’s goal in a nerve-jangling 1-1 draw at West Ham United that earned Dean Smith’s side another season of Premier League football on Sunday.
The attacking midfielder represented the Republic of Ireland at youth international level then he shifted to represent England U-21 team.
PFA chief executive Gordon Taylor said there was real concern after "cowardly and criminal" attacks on players by spectators running onto the field of play.
Pitch invasions occurred in the Scottish Premiership, the English Championship as well as the Premier League.