While Amass is on a season-long deal at Hillsborough, an unusual clause included in the arrangement involved Wednesday needing to formally request from United that the young left-back be allowed to continue after January 1.
Amass has not missed a single Championship game since his arrival at Hillsborough and completing full matches in his last ten appearances.
It's now emerged both Wednesday and United have reached an agreement where Amass will be clear to continue his loan for the remainder of the season, says the Daily Express.
United management are pleased with the progress of Amass, who has impressed despite the chaotic situation at the Owls this season.
