Neil Lennon says Celtic could be involved in a pre-season mini tournament as he looks to get his players fine tuned ahead of the Premiership kick off in six weeks.
The champions returned to training nine days ago under strict health and distancing guidelines.
But Lennon admits getting game time remains a headache with the clock ticking down towards the start of the season and he revealed they might even have to play friendlies against Premiership rivals.
A 14-day quarantine rule for anyone entering the UK threatens to scupper Celtic's plans for playing overseas teams ahead of the August 1 kick-off.
When asked if they might have to take on Premiership teams to build up match sharpness, Lennon said: "Possibly. That's a bit of a headache in trying to get some game time, trying to confirm these clubs and games.
"At the minute we can't play anybody in England and a lot of other countries, Italy, Spain, are up and going.
"We may look at some Dutch teams or French teams and get some quality friendlies but at the minute that's a difficult question to answer.
"We are hoping (the 14-day quarantine rule) would get lifted or there would be some sort of exemption from that, that would be the only possible way we could go about doing that.
"We may have an opportunity to play in a mini-tournament, that's another avenue we are pursuing as well."
One saving grace is that Celtic's Champions League qualifying campaign does not start until August 18/19 rather than the normal start date in early July.
"I think that's a help," Lennon said. "It's given us a good six weeks in terms of preparation now for those games.
"Obviously we are hoping the season will start and we will have a game or two before we go into them, so I think that will be a benefit to us rather than the way it was before."
