The Italian outfit have been exploring the possibility of signing the Chile international on a temporary basis, but his potential £500,000-a-week pay packet has proven to be a stumbling block.
However, United are so desperate to get rid of Sanchez that they are willing to pay a large chunk of his salary.
Ole Gunnar Solskjaer has decided that he does not want the former Arsenal forward involved with United's first-team squad this season.
And the Norwegian is even willing to banish Sanchez to the reserves if he refuses a move away.
United will be looking to build on their 4-0 thrashing of Chelsea on the opening weekend when they travel to Wolves on Monday.
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