In 2018-19 we had Sterling Sané Mahrez BSilva Foden (when the latter two mostly played on the wings) and even Jesus as options for our wide forward positions.
We’ve now only got Doku Cherki Savinho Bobb and then we also have Marmoush but he doesn’t suit playing on the wing and has mostly played as a centre forward in his career and BSilva and Foden (who are now both better centrally).
We have massively got room for Semenyo to come into our squad.
Semenyo can also play as a centre forward and has many times in his career. So if Marmoush ends up leaving at any point due to lack of game time in his favoured position, Semenyo could cover for Haaland.
Also, Doku is incredibly injury prone so we can’t rely on him to stay fit. This is before his current injury lay off, note how many are muscular injuries:
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Semenyo has only missed 1 solitary game though injury in four seasons.