It does because ultimately Di Maria was willing to leave, FdJ would rather cut his own bollocks off than join United.
Why do people like you keep peddling this bollocks? Him wanting to stay at Barca has nothing to do with him wanting or not wanting to come here. It's quite simple
1 - Above all else, he'd prefer to stay. They owe him a lot of money and they're his dream club
2 - He doesn't want to take the pay cut they want him to take and fore go the money he's owed
3 - If 2 can get resolved with him staying, that's his preferred choice and he'll go for it
4 - If 2 can get resolved but only if he goes, he's happy to come here and work with ETH again
5 - If 2 can't get resolved amicably, he'll probably stay anyway and make them honour his current contract
Point is, him wanting to stay at Barca is nothing to do with him hating the idea of coming to Utd. They're not mutually exclusive.
The whole thing's a fecking mess, though. We should've never bothered.