The Sardinian club have agreed a deal for the promising English midfielder, who joins from Everton on a free transfer after the teenager opted not to sign a professional contract on Merseyside.
Akarakiri, born in London in September 2007, came through Arsenal's academy before switching to Everton in 2024, where he progressed from the Under-18s into regular involvement with the Under-21 side.
He is expected in Sardinia tomorrow along with his family to complete his medical before signing his new contract.
The teenager is regarded as an interesting prospect, with some in England drawing comparisons to Paul Pogba for his movement and playing characteristics, helped by his combination of a 1.90m frame and a clean technical game on the ball.
He scored three goals and provided two assists in 33 appearances across all youth competitions for Everton last season, while also training regularly with the first team.
Cagliari plan to split his early development between the Primavera youth side and the first-team squad, easing him into senior football rather than throwing him straight into Serie A.
Head coach Fabio Pisacane has built a reputation over the past season for trusting young players, and Cagliari are hoping Akarakiri can fit straight into that pattern.
The move continues a pattern of Italian clubs looking to England's academy system for promising teenage talent rather than competing directly for already-established first-team players, often at a fraction of the cost a finished product would command.
Cagliari moved decisively to get the deal done, beating off competition from several other European clubs who had also been monitoring the midfielder's progress at Finch Farm in recent months.