Greenwood was charged with attempted rape, engaging in controlling and coercive behaviour, and assault occasioning actual bodily harm, all of which he denied.
The Crown Prosecution Service later dropped the charges after key witnesses withdrew their involvement and "new material came to light".
There was no way back for Greenwood at United, though, who spent the 2023/24 season on loan at Getafe before making the permanent switch to France.
He lit up Ligue 1 last term, finishing the campaign as joint-top goalscorer alongside Paris Saint-Germain's Ousmane Dembele with 21 strikes.
Greenwood's impressive exploits are said to have attracted interest from Inter amid their plans to bolster Cristian Chivu's attack.
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According to Corriere dello Sport, Inter's priority is Atalanta forward Ademola Lookman after he submitted a formal transfer request earlier this summer.
But Greenwood is also on the San Siro giants' shortlist, which could hand United a significant financial boost.
Sky Sports claim that United included a significant sell-on clause worth between 40 and 50 per cent in Greenwood's Marseille contract.
They would pocket that percentage of any profit Marseille make on the £27m transfer fee paid for the former Red Devils No. 11.
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Given Greenwood would almost certainly leave for a much higher fee, it would represent a well-timed influx of cash as Ruben Amorim pursues a striker of his own.
United reportedly insist they could sign Benjamin Sesko before player sales, but they would need to raise funds before the current PSR window closes.
The Old Trafford club already generated £27m of pure profit from Greenwood's exit, due to his status as a homegrown player.
Any additional income could prove crucial in their pursuit of Sesko and any further signings before the summer deadline.