No, it didn't make any sense. You said nobody saves money by selling players - that's a clear statement and one that's completely untrue.
Now you're seemingly referring specifically to examples where a player is offered less money elsewhere but it's still not true. Firstly, although not very often, players do sometimes take less pay to move on for varying reasons. Sometimes a player just wants to move so much that they'll accept less money but sometimes it makes financial sense for them to also because they may be getting a longer deal, which they might not get in 12 months time. However even if the selling club does have to subsidise the outgoing players wage, they've still saved a proportion of that players wage. You only have to look at Utd's Q2 and Q3 wagebill to see that. Now obviously there were savings from a couple of hundred staff who lost their jobs in there too but Utd's wagebill dropped by around £700k per week. Even if £200k of that was general staff, Utd still saved circa £500-600k (remembering to add back in Dorgu's wage) per week from loaning out and subsidising the wages of Rashford, Antony and Malacia.
It's just accounted for differently.