John Hartson has made a bold prediction regarding Leigh Griffiths' goal return next season after the striker signed a new one-year deal at the club.

Griffiths was expected to become a free-agent with his contract having expired earlier this morning.

At the final moment the Hoops confirmed they had decided to trigger the option of another year on the 30-year-old's situation and the player revealed his delight as did his manager, Ange Postecoglou. 

The news filtered through to supporters and pundits alike, and former striker Hartson reckons it's a good bit of business done by his previous employers.

And the Welshman revealed his thoughts on Griffiths's talents, predicting he'll bang in the goals next season as Celts look to wrestle the Premiership title back from Rangers.

"Fancy Griff for 25 goals next season," Hartson tweeted, with two thumbs up emojis.

Griffiths could well be working alongside Odsonne Edouard if fit after the Frenchman was spotted back training with the Hoops with FC Midtjylland coming up in Champions League qualifiers.