It's all hypothetical because a) Haalad already does more than scoring goals and b) he won't achieve 1.5 goals per game. But do you really think a hypothetical player who averages 1.5 goals per game but does literally nothing else could be considered the best of all times? Do you think any top coach would play such a striker? There's more to football than scoring. Actually more than 99% of a football match consist of other thins. Surely you'd expect more from the best in history than popping up once or twice over the course of 90 minutes.
Well this got a little too hypothetical for me, because we, as you said, know he already does a lot more than just score goals and pop up once or twice a game.
Like pressing:
2 x what our current #9 does
12,3 pressings/90 and 3,4 successful pressings/90 this season
vs.
Ronaldo's 6 pressings/90 and 1,23 successful pressings/90 for us
...or assisting:
0,29 assists/90 for Dortmund since he arrived there
vs.
0,13 assists/90 for Ronaldo the last 2,5 seasons and for us this season)
Then of course it's the goals:
This season:
Haaland in all comps for Dortmund: 17 goals in 1022 minutes -
1,5 goals/90 !
(....and for Norway this season: 5 goals in 268 minutes - 1,68 goals/90)
Ronaldo (Who appears in a lot of GOAT discussions) for us and apparently has been carrying us on his own this season: 12 goals in 1368 minutes - 0,79 goals/90
If Haaland keeps delivering numbers like this in a top 3/4 or better league + CL through out his career, he will of course be up there with the best in history. Not saying he will, but it is not impossible. It's impossible to know what the future brings, and all I've done is comparing his stats from the last couple of years (which is mindblowingly good for a 19-21 year old) with some of the greats, and found that so far his clubrecord in Bundesliga and CL is better than anything we have seen from someone his age since what Pele did in the stateleagues in Brazil in the late 50s/early 60s. I don't understand how you so bastantly can claim he won't. I would say there's a bigger chance he won't than he will, but nothing is 100%.
We have players who can reach the same level as Haaland under the right coaching.
This one made me smile. Sure we have a good squad, but who can reach this level? I like Greenwood a lot myself, and I think he's a great talent, but do you get that "he'll beat all goalscoring records"-vibe from him? ...or are you refering to someone else.
Are there coaches out there that can make Greenwood tripple or quadrupple his current goal output for us when he plays up front (10 goals in 2201 minutes as a #9 for us in all comps - 0,41 goals/90. That stat includes goals against Tranmere, Rochdale, Astana, LASK....)?
...and we don't even know who will be our manager 8 months from now.
And by the way: I would love to have that circus in town for 3-10 years. Circuses are fun!