Khadra spent last term on loan with Blackburn in the second tier, and caught the eye in his 27 league appearances.
In those matches, the versatile German attacker scored four goals and registered three assists.
It is also reported by Nixon that if Brighton were to allow Khadra to depart permanently this summer, Belgian side Anderlecht would be keen to agree a deal.
Sheffield United could certainly do with some of the attacking threat that Reda Khadra provided for Blackburn last season.
The Blades have a gaping hole in their squad after Morgan Gibbs-White returned to his parent club this summer and if an agreement was reached, they would hope the 21-year-old could somewhat fill that void.
Sunderland, meanwhile, are likely assessing all areas of their squad ahead of their return to the Championship following their League One play-off success.
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Alex Neil, though, has admitted that no signings are imminent at the club, but did state that the Black Cats still have plenty to do in the window.
Reda Khadra has one year left on his Brighton and Hove Albion contract.
If Reda Khadra is not going to get regular game time at Brighton next season, the club should look to move him on this summer.
Whether that be a loan or a permanent move, at his age, and after impressing for Blackburn last season, the young German will surely be wanting to feature regularly in 2022/23.
You would think he would do well for either side should he be loaned to them this summer.
Given that Sunderland have just wrapped up Jack Clarke, perhaps Sheffield United and the opportunity to once again compete at the sharp end of the division could be a good next step in the youngster’s career.