For me if it is a choice of Palmer or another team's young promising player, I'd rather see Palmer get the backing.
Likewise if the choice is Neymar or such a costly 30+ year old temporary fill, I'd happily see Palmer given a proper go.
Anything inbetween, I'd rather see an established experienced first team player replace Sterling and Jesus combined, which is a heck of an ask.
I think expectations of Palmer are way too high, and people will be disappointed. Seen it so many times before, Delap, THB, Tosin, Denayer, Rekik, Diaz and loads more. Even Foden. In the sense that after a handful of bit part appearences people expected him to just start games suddenly and replace David, when in reality he had a couple more seasons of building up appearences.
Players don't just 'break through' like some imagine Palmer will. They edge their way quietly into the team. They also do ut surrounded by a fully functioning team of regulars, not with a huge void to fill and responsibility on them to match record numbers. Hope Palmer does in the long run work his way to a regular for us, and a damn good one. But won't be a case of the club just trusting him to step up from 4 cameo appearances last season to replacing 90m+ worth of players.