Leigh Griffiths reckons the biggest danger to Celtic’s Ten in a Row bid is themselves.And the Parkhead striker is backing the heroes of Nine to stick around to help try and secure the landmark next title.Griffiths and his team-mates have turned their attentions to next term’s quest having been confirmed as 2019/20 champions a week ago.Neil Lennon’s squad have won a staggering 11 successive domestic trophies and the determination is there for the run to be extended into the future.Griffiths knows rivals will be gunning for the champions next season as they look to halt the green-and-white juggernaut.However, the attacker is convinced the quality within the ranks is such that only a drop in standards at Celtic will allow opponents to go