We have plenty of wingers already in Dembele, Ansu Fati, Trincao, (Messi?). What more do you want?
What difference does Haland make as #9 if we play against parked buses all the time? The only benefits Haland brings to the table is that he's tall, physical, decent header, and has great sense of positioning but either way it doesn't mean anything against a parked bus if all our other forwards are 170-185cm tall.
If you look at Haland play you can see that he's not very technical player and can't take part in playmaking and so. He's just going to waste time on the pitch and touch the ball couple times every 10 minutes which doesn't benefit us at all. He's very much like Mario Gomez or Jonathan Soriano type of player and it's just a waste.
Unless you want to change our entire playing philosophy and system which is going affect every other players role on the pitch just for the sake of one 19 year old striker.
Dembele is the dumbest player ever.
Horrible professionalism, forever injured, horrible decision's making.
So, one big no.
Ansu played like 5 matches in his career and is not that fast.
So, I won't hold my breath.
Trincao hasn't yet kicked the ball and is also slowish.
Messi is almost on a grandpa level and is not a winger anymore.
About changing our philosophy, Barca's/Pep's/Spanish style stopped working in Europe and there aren't any indications that it will start working again.
So, the only options are:
1) stick to our style without changes and get himiliated over and over
2) eventually move towards modern, faster, more direct football from Bayern and Liverpool
Also, the system and players which work well against Getafe (parked buses) don't work at all in Europe against teams who plays faster, athletic football.