If United can get a good striker option at a good price why not.
I think the squad needs significant ins and outs over the next 12 months. I posted in the "what do we need" thread, the striker is a huge puzzle piece and if he's good quality at only £25m it might be worth a risk, but United need a "sure thing" to convert chances post Ronaldo.
This kid is so young that him, Sancho and Antony would have a mean age of ~22 which is insane.
Only seen the highlights obviously, but my thoughts from that is that he seems to be a decent linkup player, which is required in our system, but his close control and finishing still needs to go up a notch or two. Think i watched a 5 minute video, and i'm not sure i saw him do a one-touch pass at all. Not excluding him, but he probably needs to develop significantly if he is to be our starting forward. Martial seems better at everything bar headers as of now. EDIT: Also, Martial probably better at staying injured, which is a bit significant
Don't get too excited guys. Watched him twice in the Champions League and wasn't all that impressed. He didn't show any standout weaknesses nor strengths tbh. Only scored 1 in 6 games for Benfica who finished top of their CL group. Seemed a hard worker and team player at least.