Arsenal should immediately negotiate a new long-term contract with Kieran Tierney, former Scotland midfielder Barry Ferguson has claimed.

The 23-year-old left-back has finally settled in London and has become an integral player in Mikel Arteta's side.

And Ferguson believes Arsenal need to be wary about clubs like Manchester City trying to sign the Scotsman.

He told Go Radio via The Scottish Sun: "If I'm Arsenal I'm getting him and tying him down.

"Because if I'm a Manchester City or something, I'm looking at a player like Kieran Tierney – that's how good I think he is.

"I'll be honest with you, I just love everything about Kieran Tierney.

"I think he's gone up a couple of levels since he's made the move.

"I always thought he was a very good player at Celtic, there was no doubt that he was going to move to the Premier League, but he's gone down to Arsenal and gone up a couple of levels.

"As I mentioned before, Arsenal will need to think about getting him tied down on a new contract or the top clubs in England – now, Arsenal are a top club there's no doubt about it but I'm talking Man City, Man United, or even the top clubs in Europe – if he continues to play like that they'll be looking at him, believe me when I say that."