Well, here's the list of the most productive players in Europe across all the top leagues:
Rank | Player | Age | Club | Goals | Assists | Total |
1 | Robert Lewandowski | 32 | Bayern Munich | 48 | 8 | 56 |
2 | Kylian Mbappé | 22 | Paris Saint-Germain | 42 | 11 | 53 |
3 | Erling Haaland | 20 | Borussia Dortmund | 41 | 12 | 53 |
4 | Lionel Messi | 33 | FC Barcelona | 38 | 14 | 52 |
5 | Harry Kane | 27 | Tottenham Hotspur | 33 | 17 | 50 |
6 | Bruno Fernandes | 26 | Manchester United | 28 | 17 | 45 |
7 | Gerard Moreno | 29 | Villarreal CF | 30 | 11 | 41 |
8 | Cristiano Ronaldo | 36 | Juventus FC | 36 | 4 | 40 |
9 | Romelu Lukaku | 28 | Inter Milan | 30 | 10 | 40 |
10 | Karim Benzema | 33 | Real Madrid | 30 | 9 | 39 |
11 | André Silva | 25 | Eintracht Frankfurt | 29 | 10 | 39 |
12 | Heung-min Son | 28 | Tottenham Hotspur | 22 | 17 | 39 |
13 | Thomas Müller | 31 | Bayern Munich | 15 | 24 | 39 |
14 | Mohamed Salah | 28 | Liverpool FC | 31 | 6 | 37 |
15 | Luis Muriel | 30 | Atalanta BC | 26 | 11 | 37 |
16 | Michael Liendl | 35 | Wolfsberger AC | 17 | 20 | 37 |
17 | Marcus Rashford | 23 | Manchester United | 21 | 15 | 36 |
18 | Jadon Sancho | 21 | Borussia Dortmund | 16 | 20 | 36 |
19 | Wout Weghorst | 28 | VfL Wolfsburg | 25 | 9 | 34 |
20 | Memphis Depay | 27 | Olympique Lyon | 22 | 12 | 34 |
21 | Ciro Immobile | 31 | SS Lazio | 25 | 8 | 33 |
22 | Duván Zapata | 30 | Atalanta BC | 19 | 14 | 33 |
23 | Antoine Griezmann | 30 | FC Barcelona | 20 | 12 | 32 |
24 | Álvaro Morata | 28 | Juventus FC | 20 | 12 | 32 |
25 | Lars Stindl | 32 | Borussia Mönchengladbach | 17 | 15 | 32 |
26 | Andrej Kramaric | 29 | TSG 1899 Hoffenheim | 25 | 6 | 31 |
27 | Wissam Ben Yedder | 30 | AS Monaco | 22 | 9 | 31 |
28 | Lautaro Martínez | 23 | Inter Milan | 19 | 11 | 30 |
29 | Lorenzo Insigne | 29 | SSC Napoli | 19 | 11 | 30 |
30 | Johannes Eggestein | 23 | SV Werder Bremen | 20 | 9 | 29 |
It's quite a tight table, so despite being 17th Rashford really isn't far behind. And if you take away Bruno's 13 penalties this season, he'd be comfortably number 1 at United too.
Of the players in this list, only Haaland, Mbappe, Silva, Sancho and Lautaro and Eggestein are in the same age range. If Rashford is on course to be one of the 6 best players of his generation, that would easily good enough.