Griffiths has been a key man for the Hoops in recent seasons but has been restricted to a bit-part role this time around, and hasn’t started in the Scottish Premiership since the end of January.
Despite his lack of opportunities, the Scotland striker has still managed seven goals and two assists in just nine starts in all competitions, although he’s currently on an 11-match drought since netting against Hamilton more than three months ago.
Celtic have an option to extend his contract by 12 months, but McAvennie whilst believes Griffiths is the best finisher at Parkhead, told This is Futbol the club cannot rely on him anymore:
“I don’t know if he’s been offered new terms, but for me he’s the best finisher, but he’s not done enough.
“I think Griff might want to move on, but they can’t rely on Griff.
“I would keep him all day long, but I don’t know what is wrong with him – if there’s anything else that’s a problem, it might just be that he’s fallen out of love with Celtic, but I’ve not spoken to Griff in over a year.”