Agreed.
And I know Savinho only made 1 goal and 2 assists in 24 matches this season, but you really have to consider his game time. He only started 7 matches and totalled 821 minutes (that's 9.12 matches). Nusa started 24 out of 31 Bundesliga matches, totalling 2,040 minutes (22.66 matches).
Also, Nusa hasn't really improved from the 24/25 season where he got 3 goals and 4 assists. So, 1 extra goal in 25/26 - and that's in a season where he got around 484 playing minutes (5.38 matches) more than in 24/25.
(Nusa 24/25 stats: 25 Bundesliga matches, starting 16 - 1,556 minutes or 17.28 matches).
25/26 has been bad for Savinho, but can be excused with his lack of game time - and he still has his 24/25 season to show for himself. Nusa, on the other hand, has had many minutes this season to improve himself from 24/25. However, he hasn't. And if he isn't improving in the Bundesliga, then how do you expect me to believe he can take the step up to the Premier League?
My point? Savinho is PL proven. Nusa is not. And that's why I prefer the former.