That's not how we think about risk though is it...i.e. as a binary thing (something is either a risk or it is not).
When Haaland was at Molde, we turned down the chance to sign him, and again when he went to Salzburg (source OGS on the Overlap).
Now, for me, and I believe for INEOS, a player like Modle or Salzburg Haaland would be a slam-dunk signing.
For a young player, available for around £4m and £15m the two times we showed some interested, there's nothing to lose, really. You sign him, he flops, you move him on. You sign him, he does OK, you sell him for a decent profit or keep him as a squad player. You sign him, he reaches his ceiling...you have a generational talent on your hands for a few million pounds and are set for a decade.
So, when we think about defining risk, we would say this is low risk, high reward.
Now do the same analysis with Gyokeres. Let's say we can get him for £65m/£70m on £200,000 per week on a 4+1 deal. That's a big outlay. Around £100m. Now consider the same three outcomes...he flops...we might get £20m back (bear in mind he'd be 29 if we gave him 18-24months). He does OK...we might use him as a squad player...but he'd be a bloody expensive one at £100m.
Now say he reaches his ceiling...well what is his ceiling, first and foremost? Is he really on par with prime Lewandowski or Haaaland or Kane or RvN or Suarez or Ronaldo etc...or are we saying he's the level below that, or are we saying hes not that level but has the potential to be?
I don't know because I have seen 45mins of him in action...but it seems quite unlikely he is, or will be as good as those superstars of the position. So in my view we're taking a high risk, reasonable reward line.
Not related to that argument, but another hypothetical I always like to imagine with a CF is "what would Watkins do?"...the premise being Ollie Watkins is a very good, but not elite, Premier League level striker. If Ollie Watkins played in the Portuguese league for that Sporting team, how many would he get? And would that lead us to wanting to pay £70m for him to lead the line for Manchester United as we attempt to regain our former glories?
Again, not intended as a bullet-proof scientific analysis, more a thought-experiment.