Ronny Deila’s team saw their dreams of a domestic treble ended last weekend with a defeat at the hands of Inverness under controversial circumstances, which leaves them to focus on completely another Scottish Premiership title.
“I think they will never get a better opportunity to win the treble,” he said.
“So it's a missed opportunity but I think if you had offered a chance to win a double to a young rookie manager who had not managed anywhere near this level, a lot of people didn't know who he was, I think he would have taken that.”
Deila has drilled a number of positive qualities into his team over his first season and will be looking for them to end on a high note heading into the summer and the 2015/2016 campaign.
Celtic are undoubtedly the biggest club in Scotland at the moment with a resource and support base, which most other clubs can only dream of.
If they play well, then the manager will be confident that his team have the edge over most of their opponents in terms of the key match ups and individual battles all over the pitch.
Celtic will also benefit from that feeling of determination and wrong doing heading into next season, which will give them an extra spring in their step as they go after a treble to put Deila into the history books at Parkhead.