The 31-year-old recently signed a new deal with the club and said there were only ever very small doubts about his future.
The 31-year-old was approaching the end of his contract at the end of the current campaign and the delay in negotiations had many worried that Commons' time with the Scottish champions could be up.
Many also expressed their bewilderment as to why Celtic wouldn't want to keep one of their key players at the club.
Not only did the delay perturb onlookers - it planted small seeds of doubt into Commons' own mind.
But the experienced midfielder is now delighted to have finally signed a new deal with the Bhoys, admitting he never realistically thought he would leave the club.
“It has been a little bit of a distraction. It’s very difficult to concentrate on football when you’ve got things on your mind as it means you’re not fully focused on the games but now I can hopefully play even better than what I am at the minute," Commons said.
“I never thought I was going to leave Celtic. The delay in these last couple of months put a little bit of doubt in my mind but I always knew I’d get there in the end.”
Celtic travel to Dundee on Saturday afternoon for an early 12.30pm kick-off in the Scottish Cup.
Back in the Scottish Premiership, the Hoops are three points clear of second-placed Aberdeen with a game in hand. And Celtic are still in contention in the Scottish League Cup (they are finalists) and the Europa League (they face Inter Milan in the last 32).
That leaves plenty for Commons and co to get their teeth into, then...