There is a danger that Eze at Arsenal does still risk stalling the prime of his career. He only has to look at Jack Grealish's time at Manchester City to see how that may play out, with the once beloved star now cast aside and on loan at Everton a month before he turns 30.
In fairness, Grealish most likely has no regrets over his decision to leave boyhood club Aston Villa for a team that won the Champions League in his second season there. He's taken home seven winners medals since becoming the first British player to be sold for £100 million. Though Arsenal are on a trophy drought that is on the verge of hitting the six-year mark - and as much as rival fans love to mock them for this - it's difficult to foresee a near future in which that continues much longer.
But Grealish was universally revered when he was strutting his stuff in the claret of Villa. He was a thrill-a-minute player worth the price of admission, and it culminated with the entire nation pleading with Sir Gareth Southgate to play him more at the delayed Euro 2020. Grealish became a household name, even to those who didn't even care about football, and this was before Villa became the European regulars they are today.
Part of the reason why Grealish flourished at Villa was because everything went through him. He was the playmaker, orchestrator, scorer and assister all in one. The team ebbed-and-flowed to his whim. At City, he was shunted to the touchline and became just another player in Pep Guardiola's infamous 'FPL roulette', an expendable winger whose main job was to retain possession rather than get bums off seats.
Eze may suffer a similar fate. He's not the fleet-footed left winger Arsenal have been looking for this window and is overqualified to be an option. His destiny is to run a team's attacks, just at a higher level than that of Palace. That's why the Spurs move made so much sense.
Nevertheless, the heart wants what it wants. You can't hold it too much against Eze for returning to the one club he's always wanted to play for. It's more that the fairy tale may lose its shine quickly, especially if Arsenal don't deliver a title in the next year or two.