Celtic chief executive Peter Lawwell has issued a "profound apology" to the club's fans over the club's controversial Dubai training camp.
The decision to embark on the trip received widespread criticism, which was compounded when defender Christopher Jullien tested positive for Covid-19 upon returning.
That resulted in 13 teammates plus manager Neil Lennon and assistant John Kennedy into self-isolation.
An under-strength Celtic drew 1-1 with Hibs on Monday night to leave their Scottish Premiership aspirations in tatters.
They now trail Rangers by 21 points, albeit with three games in hand.
Lawwell admitted the trip was a mistake in a YouTube video message to fans on Wednesday.
He said: "It's been an extremely difficult few days, and on reflection, looking back with hindsight and at the outcome of the trip - clearly it was a mistake.
"For that, I profoundly apologise to our supporters. We left here and the rationale for the camp was the very best intentions.
"Things haven't gone the way we wanted to and the outcome is clearly very regrettable."
Asked why the club decided to press on with the trip despite deepening Covid-19 concerns in Scotland, Lawwell continued: "If you look back on the past four years going to the camp in Dubai has been extremely successful.
"The decisions we made were entirely for the best interests of the team and the best interests of the club, and what we planned to do was to take them to these facilities again, which are world class after a very, very hectic programme for November and December, which has previously been of a huge benefit after January, to take them there, give them the training come back and get to that performance level again.
"So that was the rationale.
"So in terms of the facts about the trip, we decided back in November to go and were permitted to go, clearly the landscape has changed significantly particularly in the run up to us going to Dubai in terms of the infection rate."
