On Saturday, Chelsea will face Leicester in a return to the King Power Stadium which will bring back fateful memories of the beginning of 2021.
Back then, in mid-January, Chelsea had just lost their fifth Premier League game in eight, with Leicester going top of the table after 2-0 victory against a hapless Blues, short of confidence and direction.
Even Frank Lampard admitted afterwards how 'worried' he was about the Blues' dramatic downturn in form, leaving them eighth in the table and nine points off the Foxes.
Chelsea's loss to Leicester in January was the final straw for Frank Lampard as Blues boss
A Chelsea side short of confidence were nine points off the Foxes and positioned in eighth
'It's not where we want to be,' he said then.
'I am worried. From the form we were in to get so quickly in to the form we're in now, even with the Fulham win [on Saturday] and some other wins in there, we should be better than losing five in eight.
'It's a young team. They won't be feeling nice. I'm not against the lads in the dressing room. They will have learned a lesson.'
Ultimately, the person who learned the biggest lesson was Lampard. He didn't know it then, but it would prove to be his last post-match Premier League interview.
Costly losses against Everton, Wolves, Arsenal and Manchester City in the festive period cost the Chelsea legend his job. Yet beyond all the sentiment, Roman Abramovich had been here before - and knew a change was necessary.
Enter Thomas Tuchel. Fresh off a sacking of his own a few weeks earlier at PSG, the German sparked a turnaround which - such was its significance - will go down in Chelsea history.
Just over four months later, Tuchel had secured a Champions League spot - at Leicester's expense - had reached an FA Cup final where he missed out to the Foxes and claimed the greatest prize of them all in Europe.
Thomas Tuchel came in and rejuvenated the group of players in spectacular fashion
Recalling the likes of Cesar Azpilicueta set the Blues on their way to Champions League glory
But just how did Tuchel rejuvenate a squad undoubtedly bereft of confidence at the start of the year, to the point of Champions League glory?
Fundamentally, he unified a group of players - particularly elder statesmen previously
