It's a bit of a catch-22. The proven 'game changers' are either aiming higher than us or already at top clubs, while the potential game changers from other leagues are unproven and, thus, a risk, or unappealing to fans.
6 months ago if we'd signed Rayan a lot of Spurs fans would've (quite fairly) said "wtf are we doing signing another unproven 19 year old who doesn't know the league ffs". And yet now he looks like, potentially, a real rising star for Bournemouth.
We've either got to get into a position where we can actually attract established guys like Semenyo to come to us, or we need to get better at scouting and bring in the right younger/foreign players before the explode.
Like, maybe in 2 years, with the right coaching, Hackney is a game changer? Who knows?