What short-term impact could Mauricio Pochettino have on Manchester United?
The Paris Saint-Germain boss is interested in taking over at Old Trafford and that will mean an immediate upturn in fortunes if his spells at former clubs are anything to go by.
Having retired in 2006, Pochettino became Espanyol's third manager of the season in late January 2009 with the team sitting in 18th position, five points adrift of safety.
The highlights of Espanyol's season were two fantastic results against rivals Barcelona, who would go on to win La Liga, the Champions League and the Copa del Rey that same campaign. In his first game in charge, Pochettino was able to mastermind a 0-0 draw in the Copa del Rey despite having taken charge of two training sessions.
Following on from a three-and-a-half year spell at Espanyol, Pochettino took over from Nigel Adkins at Southampton in 2013. In what was a controversial and risky appointment, he was put in charge of a club that was hungry and ambitious and looking to break into the Premier League top 10.
He put his faith in youth and 17-year-old Luke Shaw prospered under his guidance, making 25 appearances in his first season as a pro.
The following season after Saints finished eighth, Shaw was off to Manchester United for £30million and Poch was on his way out, too.
Pochettino moved to Tottenham Hotspur in the summer of 2014, signing a five-year contract. For the first time in his managerial career he would have a full pre-season to get his new team ready for the campaign ahead.
He signed six players for around £30million in his first transfer window at White Hart Lane. Of those, Ben Davies and Eric Dier remain on the playing staff, while Michel Vorm is the goalkeeping coach. The other three, DeAndre Yedlin, Federico Fazio and Benjamin Strambouli, made just 33 Premier League appearances for the club.
Immediately, Pochettino put his faith in players who had come through the system at Spurs. Harry Kane made his big breakthrough, while other players such as Ryan Mason, Nabil Bentaleb, Andros Townsend and Danny Rose were given extended runs in the Premier League. Dier and winter signing Dele Alli would also make a case to be included in England's Euro 2016 squad.
Having spent time at PSG as a player before the Qatari money came in, Pochettino returned to the club in 2021 as manager, following over a year away from the game.
As with Espanyol and Southampton, he joined in January. He did not bring anyone in during the winter transfer window, keeping his powder dry for a summer that would see Lionel Messi, Gianluigi Donnarumma, Gini Wijnaldum and Sergio Ramos arrive on free transfers.
He then won his first piece of silverware as a manager just days later as PSG defeated Marseille in the Trophee des Champions 2-1, with Mauro Icardi and Neymar scoring.
In February, PSG defeated Barcelona 4-1 at Camp Nou in his first Champions League game in charge of the club. The win saw them progress to the quarter-finals, where they beat Bayern Munich over two legs before losing to Pep Guardiola's Manchester City in the last four.