I did his sbc for around 80k. I needed to do him as I needed a Seria A RB as the other option would be Danilo and I don't want to grind that much. Malcuit has superb speed and is able to run down the wing very quickly and beat his man. This helps with quick counter-attacks. Malcuit is a very well rounded RB and able to not only catch up to a player like Mbappe but even intercept the ball from him. If you have the players in your club to do this sbc and it won't cost you 60k + coins I'd say for sure do it but for 100k I don't think he is worth that much because first of all he does not have good long shots, weakfoot, and skills and if you are spending 100k+ just save for an icon as an icon can literally link with anybody and this man can't do that.
So fast he'd leave QuickSilver in his dust
Great Defence with Anchor
Physicality (Very strong with Anchor)
Very expensive (if you are spending 100k+ just save and get an icon)
Long Shots (Picky)