The Chilean attacker has been a complete flop since arriving at Old Trafford from Arsenal last January.
Despite United wanting to sell and Sanchez hoping to move on to a place where he can get regular game time, their divorce will not be a cheap one.
According to the Mirror, United will have to pay Sanchez nearly £12 million even if they loan him out.
Given his exorbitant wages, other clubs may only pay up to half of what he earns at United, leaving the English club footing the rest of the bill.
Inter Milan are the most likely suitors, per recent media reports.