German youth international Khadra caught the eye of Unitedites and manager Paul Heckingbottom whilst on-loan in the Championship with Blackburn Rovers last season, scoring at Ewood Park and producing an excellent display, despite having a penalty saved by Wes Foderingham in the return fixture at Bramall Lane.

In July 2022, United secured the services of the Berlin-born forward on a loan deal from Brighton & Hove Albion which includes an obligation to buy.