Felix is 23. (Still has his career ahead of him)
Felix is more a second striker, #10 or a winger than a #9, but wouldn't compete with Weghorst.
We do need a striker more than we need a AM, LW, RW, SS though. We have plenty of options there.
How do we have "plenty if options"?
The only quality #10 we have is Bruno
The only quality, senior left winger we have is Rashford
With Sancho uncertain, the only quality senior RW we have is Antony, and even he needs competition because he's been on a goal draught.
None of them can play every game coming at us, with the crazy schedule. And we have no depth. We need a forward that can play multiple positions.
We do have a #9, Martial. We are not bringing a 30year old from Besiktas to bench Martial. Ideally we need a player that can cover multiple positions in the front line. We can start thinking about a dedicated striker in the Summer, if we have money to address several positions.