(Photo by George Wood/Getty Images)Manchester United have suffered a major setback in their search for a long-term left-back after Newcastle United made it clear they will not consider a sale for Lewis Hall. Newcastle are determined to keep HallAccording to TEAMtalk, Newcastle have informed United that Hall is unavailable and remains a central part of their long-term project. Man United must find another solution in the marketHall would be an excellent fit at Old Trafford. A younger alternative with similar technical qualities would be a smarter investment than allowing one unavailable player to delay the entire defensive rebuild. Man United ready to offload ‘special’ player as Euro giants open talks with agent