Ten titles in a row.
Celtic haven't quite achieved that just yet, but it wouldn't be a great surprise if they did accomplish it next season.
Their ninth successive crown came in rather strange ways given the climax of the Scottish Premier League, but there is no asterisk beside their name - the Hoops won it fair and square.
However, their efforts to try and win another title in a row could be centred around whether they hold onto Odsonne Edouard and Kristoffer Ajer.
Both key players in Neil Lennon's side, he's going to have a job on his hands to keep them at Celtic Park.
Much of their success in 2020/21 will come down to those they keep, but players they bring through the door will also have a considerable say.
Whether it's Lyndon Dykes or Shon Weissman, further firepower may well arrive.
However, on Thursday, they were met with some transfer blows...
Barkas headhunted
One of Celtic's primary target's this summer looks to be AEK Athens stopper Vasilis Barkas.
The goalkeeper has been linked with a move to Parkhead on a couple of occasions now as Lennon aims to for an alternative to Fraser Forster.
The Southampton giant is still training with the Glaswegians but his contract at Celtic Park will be up at the end of the month. Whether he arrives on a permanent deal from the Saints remains to be seen but he's certainly someone Lennon wants back.
However, if he doesn't, they face even further competition for Barkas' signature.
News emerging in Greece over the last 24 hours claims that Celtic's Old Firm rivals Rangers are now in the hunt for his signature. That, however, would be rather surprising given they signed Jon McLaughlin in recent days from Sunderland.
Though, there is now more realistic interest from English Championship side Leeds.
He is liked by the club's executives and could well be appealed by the potential of Premier League football next term.
Either way, further interest is a big blow to Celtic's hopes of signing him.
Christie latest
Lennon has made it clear that he wants Ryan Christie to stay in Glasgow for the foreseeable future.
Although his contract doesn't expire for another two years, it would be a wise financial decision to tie him down for as long as possible.
According to reports, the attacking midfielder is set for talks over a new deal, and thus, former Scottish footballer Alan Hutton thinks he'll turn down any transfer approaches this summer.
Speaking to Football Insider, Hutton said:
"I’m pretty sure there will be people having a little closer look at him but I just believe that Celtic trying to go for 10 in a row, they’ve won so much as it is, he’s still very young, he’s got time on his hands for that if he wants to go in the future.
"It would cause him no harm to stay for another two, three seasons," he added.
Christie was in sensational form this term, scoring 19 goals and registering 16 assists in 43 outings.
It's a considerable haul, one that is sure to attract suitors from elsewhere. Tying him down, therefore, is vitally important.
Player leaves the club
Christie may well be staying at Parkhead, but one player that isn't is Josh Adam.
The 16-year-old is yet to play a first-team match but despite that, he's been scooped up by Manchester City - that's according to reports anyway.
Dubbed one of Scotland's best young talents, this should come as a mighty blow to Lennon and his desires to make Celtic an attractive place to play.
It's hard to turn down the lure of Man City so no one can really blame Adam, a teenager who's been offered scholarship terms in Manchester.
Highly-rated, he also attracted interest from the Bundesliga, a player quickly becoming a home for young British footballers.
Fortunately for Lennon, though, it's not Edouard or Ajer he's seeing leave.