Celtic legend John Hartson has hailed Arsenal-bound Kieran Tierney as a "brilliant" Hoops player - and tipped him for the top.

The ex-striker took to social media after news dropped last night that Tierney was headed down south for a medical at the Emirates.

Welshman Hartson - who himself enjoyed two years as a Gunner - praised "grounded" Tierney ahead of the move.

And he revealed his wishes for the Celtic hero to have a stellar career.

He said: "Arsenal are getting a fine player, a wonderfully grounded boy, been brought up in humble surroundings, I can only wish Kieran Tierney a great career. 

"Been brilliant for Celtic. Good luck mate".

We told how 22-year-old Tierney was pictured for the first time today since he jetted out to London to finalise his reported £75,000 per week contract.