The 18-year-old left-back, signed from Cerro Porteño for an initial £3.3 million ($4.4m) with potential add-ons up to £7 million, has inked a five-year contract running until June 30, 2030.

The deal, first reported by GOAL in December 2024, sees the highly-rated prospect join United’s ranks as part of Sir Jim Ratcliffe’s long-term vision to bolster the squad with young talent.

Leon, who debuted for Cerro Porteño in August 2024, scoring in a 1-0 win over Sportivo Ameliano, made 23 appearances, including Copa Libertadores matches, showcasing his physicality and speed.

Compared to Marcelo for his attacking runs and dubbed a “teenage Wayne Rooney” for his impact by Paraguayan football expert Ralph Hannah, Leon’s 78% duel success and versatility as a left wing-back fit Amorim’s 3-4-2-1 system.

United outmaneuvered Arsenal and Manchester City for his signature, with technical director Jason Wilcox sealing the deal in January 2025, though Leon remained with Cerro until turning 18 in April due to Premier League rules on overseas signings.

United’s left-back crisis, exacerbated by Luke Shaw’s injuries and Tyrell Malacia’s recovery from knee surgeries, makes Leon a strategic addition.

While he may be loaned out for first-team experience, as suggested by Manchester World’s Rich Fay, Amorim could integrate him as a deputy to Patrick Dorgu, signed in January. Fans on X are optimistic, with @Utd_Forever7 posting, “Leon’s a gem—Amorim’s got a star for the future!” Others, like @RedDevilsFan, caution, “Hope he adapts quickly—big step from Paraguay.”

The signing, part of United’s £358.5 million summer spree including Harry Kane (£122m), Viktor Gyökeres (£110m), and Bryan Mbeumo (£63m), aligns with their focus on high-potential youngsters like Chido Obi-Martin and Sekou Kone.

With nine players released, including Victor Lindelof and Christian Eriksen, and Alejandro Garnacho’s £50 million move to Arsenal, United are streamlining for a Premier League and Europa League push.

Leon’s arrival, while low-cost compared to United’s blockbuster deals, signals their commitment to building a sustainable future, though his immediate role remains uncertain as Amorim balances youth and experience.