Not sure why you think he's a must buy after just one GW and besides you already have 4 premium midfielders but if you must make any sacrifice it must be Wirzt to £5.6m( Reijnders), Saka to  £5.5m midfield( Anderson ) to save up £6.9m then you can do Bowen to Halaand. If you have anything left in the bank you could also do Saka to Kudus instead and still get Halaand. 3 FT and you're good to go.

Kai Havertz long term injury - Jackson could be the unsure Hero they need. Rruchi man?