In 1986, Manchester United made the biggest decision in the entirety of their club history as they hired manager Sir Alex Ferguson from Aberdeen.
After an initially shaky start to life in the north of England, the Scot went on to become the most successful manager in the history of the English game, guiding the Red Devils to no fewer that 13 Premier League titles.
He also won two Champions League trophies during his time at Old Trafford and in truth, the club have never really got over his departure in 2013.
However, Jose Mourinho is having a pretty good go at it now, earning Ferguson's praise in the process.
Speaking at an event in Nyon earlier in the year, Ferguson said: "I think that the Europa League has taken on arms and legs since they made the decision to let the winner enter the Champions League.
“Jose seized on that and he was playing his best team in every round, right from the start. He deserved to win it because his attitude was first class.
“Once Jose realised he wasn’t going to win the league back home in England, his intent of winning the Europa League became greater and greater as each round came along. That was a great achievement.”
However, the dynasty Ferguson left at United was in danger of not happening back in 1982, because another top English club was after his signature due to his successes with Aberdeen.
FERGIE NEARLY HAD ANOTHER ENGLISH HOME
Tottenham were the club, with the north London side going through one of their most successful ever periods.
They were the FA Cup holders and finished runners up in the League Cup, losing 3-1 to Liverpool in the final.
Former Spurs chairman Irving Scholar is quoted as saying that he and Ferguson even shook hands on the potential deal.
FERGIE'S SPURS HAND SHAKE
"The truth was that I had been talking to and negotiating with Alex Ferguson about a deal," he said.
"He and I had had very long and detailed discussions.
"I told him that I was a very old-fashioned type of chap and that the most important thing was that once you agree something, once you shake someone's hand, it's in concrete.
"Once you do that, then you do not — under any circumstances whatsoever — you do not go back on it. It's over."
Wow, Fergie was very nearly at Spurs and the path of the north London club could have been very different.
Instead, they appointed Peter Shreeves and went on to endure a few decades of mediocrity.