When Tottenham agreed a deal with Southampton for Pierre-Emile Hojbjerg during the summer transfer window, a lot of Lilywhites fans will have been more than happy to see Kyle Walker-Peters head in the opposite direction.

The youngster, who was a product of Tottenham's academy, had struggled for regular game time under both Mauricio Pochettino and Jose Mourinho, making just 24 first-team appearances for the Lilywhites; in which he contributed one goal and five assists.

He spent the second half of the 2019/20 season on loan with Southampton and after impressing with Ralph Hasenhuttl's side, it was clear that the Saints wanted to make his move a permanent one, which worked in Spurs' favour as it allowed them to complete a deal for Hojbjerg.

Whilst the Danish international has impressed since joining and has been a mainstay in Mourinho's side, it seems as if the club may be beginning to regret letting Walker-Peters go for £12 million.

The 23-year-old has been in superb form with the Saints this season, averaging an excellent 7.06 rating for his displays in the top-flight, whilst also helping the South Coast club earn eight clean sheets, which is the joint-best record of any team in the division, whilst he has made an impressive 49 tackles this season.

Meanwhile, Spurs' summer signing of Matt Doherty is not yet bearing the fruit many thought it would, with the Irish international having struggled to cement his place in the Lilywhites' starting side, whilst his baffling sending off in the final moments of the 3-0 win against Leeds recently will surely have left Mourinho fuming.

Fellow right-back Serge Aurier enjoyed an impressive start to the Premier League season but he has not featured since his dreadful display against Leicester City recently, where he, perhaps, relapsed into his old error-prone self by giving away a needless penalty in the first half.

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Therefore, when you consider how well Walker-Peters is settling in with Southampton, helping transform their defence into one of the best in the Premier League, it could definitely be argued that Daniel Levy and Mourinho made a mistake in letting the £12m man go, especially as Doherty is yet to find his feet in a Spurs shirt.

And, in other news... Mourinho must consider axing THFC flop who causes "major problems" in January