Throughout the summer, the Brentford forward was ready for a transfer, yet the Red Devils did not pursue a deal.
Eventually, Toney sealed a £40 million move near deadline day to Al-Ahli in Saudi Arabia.
According to ESPN, he was disqualified from United’s shortlist because of his pressing.
The Red Devils felt that Toney did not work hard enough off the ball to justify the fee he would command.
United have Rasmus Hojlund and Joshua Zirzkee as their two main forwards.