Grealish opened his account for the 2022/23 season with a goal within the first minute through the 3-0 victory at Wolves on Saturday.
The England star has solely notched 5 goals and three assists since his 2021 transfer from Aston Villa in a British-record £100million deal.
His strike at Molineux answered among the questions around the 27-year-old’s underwhelming numbers at City – and manager Pep Guardiola has spoken out in defence of his performances.
But Souness continues to be unconvinced, as Grealish prepares to hyperlink up with the Three Lions this week forward of the World Cup in November.
The iconic midfielder argues Grealish has failed to enhance since leaving Villa Park and not simply due to his output in entrance of goal.
Souness believes Grealish takes too many touches and strikes the ball too slowly as a result of his imaginative and prescient is not but on City’s degree.
“He is a good footballer. He is not a great player,” Souness told talkSPORT.
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“He is an effective player who acquired a giant transfer and is but to do it at Man City.