Last night, viewers watched the 17-year-old Essex opera singer deliver a knockout performance of Nessun Dorma at her Blind Audition. However, the coaches failed to spin their chairs and select her for their teams.
The Black Eyed Peas frontman said he had 'missed an opportunity' - and according to The People, he regretted his decision so much that he now intends to add Shansel to the roster of his company, the Will.i.am Music Group.
In a scene that was left out from the show, Will apparently told her: "I want us to make music this weekend."
Shansel confirmed the news, telling the newspaper: "I'm so glad that I do have a second chance with Will. I was hoping that we would work together that weekend - as he said when I was on stage - but that couldn't happen because he is under contract for the show.
"At the moment that means there's no contact between us. But backstage his agent approached my parents on his behalf and we've exchanged email addresses."
But his actions have apparently left top brass infuriated, with one insider saying: "The move was certainly not deemed to be appropriate."
Another source added: "This doesn't look good for the BBC. The Voice is supposed to be about focusing on contestants' singing abilities.
"But if Will is rejecting people on the show and then signing them up, it seems that he isn't quite practising what he preaches. It also raises questions about his motives - whether intentional or not - in voting Shansel out, which I presume is why those scenes were cut.
"As a reject, she is much more available to him."
The winner of The Voice UK will recieve a one year recording contract with Universal, who also have first refusal on any contestants that make the live shows for 30 days.