Celtic fullback Kieran Tierney has changed agents.

The Scotland international is being tracked by Manchester United and Manchester City this season.

The Daily Mail says Tierney has joined London-based agents Stellar Group. He split from Glasgow-based agent Raymond Sparkes before signing a new six-year contract with the Parkhead club last month.

Former Celtic star Mark Burchill stated: "I've heard Kieran has just left agents. He's gone to a big agent in England who knows how to manage players and careers.

"I'm sure they will have a plan in mind, whether that's staying another five or six years or going.

"And I have absolutely no doubt he will make the right decisions with the right advice and whatever he does he will be a success because he has that type of character."