Most PL footballers play far too many games, plus international qualifiers and tournaments. A lot of them are going to be burnt out before they hit 30. I can see Saka being one of those; he's only 23 and already played almost 230 games for Arsenal/England.
And, Amorim needs to spend a lot of time on the training ground with this squad in the summer instead of wasting time jetting around the globe, just to make a few £m, which will probably equate to Casemiro's salary for a couple of months, undoubtedly picking up more injuries along the way. If we have to play these games in Hong Kong, they should send Heaton, Evans, Lindelof and a bunch of U17s.