Exactly what the plan is in whatever moments Madders is off the pitch seems entirely up in the air atmTBH, I think we need a player like that to be both Maddison's backup as well as starting alongside him when we want to really attacking.
Biss on his own behind them should be fine.
I just don't like Gallagher cos he'd be super expensive and he's not that good, and as you said he's not very technical.
Sarr? Kulusevski? 4-4-2?