
As Casemiro’s departure looms, INEOS is already executing a ruthless succession plan at left-back, with 18-year-old sensation Diego Leon emerging as the heir to Luke Shaw’s throne.
While the headlines at Old Trafford are dominated by Casemiro’s impending exit, a quieter but equally significant revolution is brewing on the left flank. For over a decade, Luke Shaw has been a mainstay at Manchester United. Yet, ahead of a seismic 2026 summer window, the 30-year-old’s tenure is under unprecedented scrutiny.
Despite a rare injury-free run in the 2025/26 campaign starting all 26 Premier League games Shaw’s performances have raised questions. The shift to a flat back-four under Michael Carrick has exposed his declining mobility. Most notably, his recent struggle against Jarrod Bowen in the clash with West Ham highlighted a lack of the “explosive recovery” that once defined his game.
The “Teenage Rooney” Waiting in the Wings
The solution, however, is already within the walls of Carrington. Last summer, INEOS quietly secured the signature of 18-year-old Paraguayan prodigy Diego Leon for a modest £6m from Cerro Porteno.
Leon hasn’t just impressed; he has startled academy onlookers. South American football expert Ralph Hannah recently drew a striking comparison that has set pulses racing:
“With his shaved head, hunched shoulders, and raw physical power, Leon is remarkably reminiscent of a teenage Wayne Rooney.”
It’s not just an aesthetic comparison. Leon plays with a “steam train” intensity. Unlike the current version of Shaw, who often opts for the safe backward pass, Leon is a progressive monster. His solo goal against Tottenham U21s earlier this season showcased a player who doesn’t just occupy the left-back slot he dominates the entire wing.
By the Numbers: The End of the Shaw Era?
Statistical trends suggest Shaw’s attacking output has hit a plateau. Despite his high minutes this season, the England international has registered just one assist.
With just 18 months left on his contract, this summer represents United’s final chance to “cash in” on Shaw. With Tyrell Malacia set to depart on a free and Patrick Dorgu recovering from injury, the path is clear for Leon to be fast-tracked into the first team.
Under the ruthless regime of Jim Ratcliffe and INEOS who have already offloaded icons like Marcus Rashford no one is safe. If Diego Leon is truly the “teenage Rooney” of defenders, Luke Shaw’s 12-year Manchester journey may be reaching its final destination.

Ronald Mike is a football writer covering the English Premier League, providing match analysis, tactical insight, and coverage of key rivalries and title races across the season.
