If you said we could guarantee the Gini of the last 5 years for the next 3 years would you keep him the answer would be yes.
However, I can see valid reasons not to go all out and match PSG for wages — his age, possibly his motivation if he’s on a last big payday (if he was so preoccupied with securing improved terms), the risk of tying up a big wage in such an important area of the pitch and the potential to limit the next generation from coming through, the energy levels and freshness you need to play in a Klopp team, the fact that we can only have so many older players in the squad.
Then you look at Milner and say if he can do it why not Gini. Not as versatile, ok fair enough. It’s a tough one though I think. Not as key as some other players but still important enough that we better have a good plan to deal without him.