John Kennedy is convinced Celtic fans will one day tell their grandchildren tales of James Forrest’s legacy, backing him to become the most decorated player in the club’s history.

Celtic are set to honour their one-club man with a testimonial against Athletic Club on Tuesday night in a richly-deserved tribute for the 31-year-old winger. Forrest has amassed 23 major honours during a glittering Celtic career, including playing and scoring in every one of the club’s march to nine consecutive Premiership titles.

Never one for hogging the limelight, you won’t find Forrest shouting about the fact he could feasibly match or surpass Bobby Lennox’s all-time record haul of 25 by the time he hangs up his boots. But Kennedy maintains that Forrest’s preference to quietly go about his business is no small factor in his incredible success.

READ MORE: Brendan Rodgers dismisses Celtic 'apprehension' ahead of season opener

“The thing with James, it [Lennox’s record] is probably not on his mind,” said the assistant manager. “He’s not that type. It’s for everyone else to speak about. He’s just a quiet guy who likes to go about his business.

“Even this game, he’ll enjoy it, but he’s not one to hog the limelight or the headlines. He very much works for the club and quietly goes about his business.

“It’s one we make sure he makes the most of because he thoroughly deserves this once in a career opportunity where it’s all about you and the fans celebrating your success.

“He needs to take it in and enjoy it. In terms of the medals, there’s no reason why he can’t go and surpass it and become one of the Celtic greats.

“He’s certainly up there already but the more he wins the more he moves up the chart. I’m delighted for him as he deserves it.

READ MORE: John Kennedy on staying at Celtic and why he opted against Tottenham

“James will be one in years to come everyone will look back and recognise how terrific he actually was.

“When he’s here it’s sometimes like kids with a new toy when there are new players coming in.

“They get the headlines and cause a bit of excitement, while the guys who have been about a bit longer are just there and we know they are there.

“I think he’s respected, the fans and obviously us in house.

“But sometimes guys like James, who doesn’t put himself out there on social media and stuff, can be forgotten about.

“What he has contributed over the seasons has been unbelievable and he’s been a huge part of the success of the club.

“In 10 or 20 years time people who have watched him will talk fondly about him to their grandchildren.”