If you want to move on players like Smalling, Jones, Young, maybe even Lingard, you need to fill their roster spots with homegrown players because you have only 8 of 25 now (which is the absolute minimum). Longstaff and James might be considered as closer to contributing to the first team and/or, they plan on loaning out Gomes and Garner. If you promote Gomes and Garner, but never play them because they aren’t ready, it’s really a waste of a roster spot. Plus, they don’t get the chance to develop.
Frankly, I haven’t seen too much of Garner, so I don’t know how close he is to first team football. Gomes looks really small and to play centrally in the PL at 5’3” would be unusual to say the least.
I know that it seems ridiculous that we would be going for players like Longstaff and James, but I do believe there are other, more mundane motives behind these reports and we shouldn’t panic too much.