Jonathan Barnett says it's been rewarding seeing Jack Grealish develop his career at Aston Villa.

Barnett, who heads up Stellar Group - the agency Grealish is signed to - has addressed the playmaker's future.

"I think Jack has a wonderful future. I think he's the most fantastic player. He has a great future. It's all ahead of him. He's got everything to become a really big star," said Barnett, speaking to Sport Witness.

“With Stellar, we start with very young players when they are 18 years old, when they are starting up in their career. It's very rewarding when you see them reach the heights you think they can and we've been a part of that.

"The success they get on and off the field is very rewarding. It's great feeling that when a player gets to the end of his career and is happy and has everything he wants. We know then we have done our job."