I think it's far too glib to simply claim that athleticism can be developed. It makes no sense: if we accept that athleticism is important in football, and that it can be developed, then it follows that all footballers would be athletic, because they have every incentive to maximise their attributes. But there are clear differences between footballers in terms of athleticism, so it must be that training can improve a player's athleticism but not nearly enough to equalise for natural differences among players. And since football is a competitive sport, and what matters is relative abilities and not absolute abilities, then that state of affairs is therefore a problem for those less naturally athletic.
Clearly Suso's physcial deficiencies are not a total bar to success with us, but they are a disadvantage. His technical level is going to have to be that much better to compensate.
Luis Alberto: it's an interesting idea to try him deeper. Tbh I haven't (have any of us?) seen enough of him to really have a strong opinion on how he might develop. He looks like a creative passer, and as you say, a good eye for goal. You'd tend to think therefore that he should be kept fairly close to goal, but I suppose it's too early to say.
