Shelvey, who spent three years with the Reds, has completed a £12 million move to St James’ Park, with the report indicating Liverpool’s 30% sell-on clause entitles them to £3.6 million of that fee.
The midfielder, still just 23, managed 69 appearances for Liverpool whilst contracted to them, having moved to Anfield as a young talent from Charlton Athletic.
During his sale to the Swans in 2013, they understood that Shelvey was likely to move again in the future, and so inserted the clause to hand them a boost at a later date.
And the Merseyside club are about to collect their reward, with the windfall likely to help Jurgen Klopp this month as he searches for reinforcements.
Steven Caulker has been added to his ranks on a loan deal until the end of the season, but the head coach wants further defensive recruitments to provide cover whilst Liverpool are struck down by an injury crisis.
The Newcastle website confirmed that the move was official on Tuesday evening, with the Mail report indicating the fee as being £12 million.