It's absurd. The only way I see us loaning Alvarez to them is if there is an obligation to buy with a fee close to £100 million. And when has a move like that ever happened? These journalists have to be smoking some good stuff.
When we bought Aguero in 2011 Atletico charged us £36 million which is the equivalent of £96m today according to the Transfer Index (which adjusts for inflation). And that's BEFORE the transfer market fees spiked. Rasmus Hojlund was £72m a year ago, and while it is United, that just shows how dry the striker market is right now.