Roy Keane thinks Manchester City is the perfect place for Jack Grealish to develop.

City paid £100m to sign Grealish from Aston Villa this past summer.

Speaking ahead of England's World Cup qualifier against Hungary, Manchester United legend Keane said: "Unless the lad is brain dead, he'll become a lot better player, he'll become a team player, he's gone to a great team working for a great manager.

"Interesting the money he's gone for, but in the interview there, there's potential. There's a lot more to come from Jack, he was the main fella at Aston Villa, he won't be the main fella with England and he's not at Manchester City.

"But he's learning. Loads of parts of his game have to improve, his discipline, end product - more goals but I think he's gone to the perfect manager to improve all those aspects of his game."