The CF market is pretty slim pickings right now, especially given Utd could do with a CF option in January to at least replace Ronaldo's Europa League minutes and cameos off the bench.
Potential big signings such as Osimhen or Schick will likely not be feasible or even desirable in the January market and don't even seem guaranteed hits for the likely high fees. Then it'd probably be preferable to bring in a prospect who can improve instead a short-term stop-gap such as Ighalo or Arnautovic.
Unless Sesko is somehow available for £50mil or so, then bringing in this guy in January seems like it'd be a very sensible deal. He looks rapid, has a powerful strike, a great leap, decent strength with his back to goal, plus is left footed. He definitely looks more a proper no.9 in the making than someone like Gakpo, and would provide a different option off the bench with his aerial presence and likely tendency to move to the right side of the pitch (as opposed to the right-footed Martial and Rashford both drifting to the left).
I don't think his technique seems that much of an issue either. Sure, it's not immaculate, but it can improve. But even as is it seems no worse than players like Nunez (and before people turn their noses up, for the seeming £10-15mil mooted fee for this guy, and the kind of option Utd could do with off the bench, someone who could even be like a young Nunez for that fee would be a good move).
He can get 6 months of cameos off the bench for Utd to help develop and for the coaches to assess his level, and then Utd can reassess the CF market again in the summer if they wish to sign someone else more senior and when more players, including possibly someone like Kane, are more likely to be available.