Standard Sport understands that Hall is a long-standing target for United, but it is believed that a deal would be difficult to negotiate at this time.
United are in the market for a new left-back with Luke Shaw, 31, having now entered the final 12 months of his contract at Old Trafford, though sources insist they are not pursuing a move for versatile Arsenal defender Myles Lewis-Skelly.
The Red Devils are currently assessing what their priority position is heading into the final month of the summer transfer window, with reinforcements also needed in attack.
captain Bruno Guimaraes edging towards a move to Arsenal.
United have already made three signings so far this summer, bringing in midfield duo Andrey Santos and Youri Tielemans from Chelsea and Aston Villa for a combined fee of around £85m, plus veteran goalkeeper Karl Darlow on a free transfer following his exit from Leeds.
United’s pre-season tour of Europe continues this weekend when they take on back-to-back Champions League winners Paris Saint-Germain in Gothenburg, Sweden.
