First of all, greenwood is my favourite player in real life so I might be a bit biased. But this really is one of the best strikers I've ever used on fifa! He has 44 goals in 19 games for me, those stats may be a bit inflated because I'm playing in div 8 (dropped from div 6 while doing challenges).
Anyways he is a huge upgrade to my 91 Rashford, he wasn't bad at all but would occasionly miss some absolute sitters. Mason on the other hand scores EVERYTHING! When it comes to finishing, he's really got it all, 5* weak foot, outside foot shot and finesse shot traits. Slap a marksman on him and he will have 97 overall shooting, 91 strenght, 97 jumping and 98 heading so he will win aerial duels against defenders quiete a lot.
Altough I really like this card, there are definitely some downsides, mid/mid workrates and 88 pace doesn't really fit the "meta" as he rarely makes good runs in behind unless you manually make him. You could use a chem style to boost his pace but I tried and didn't really feel any different. That isn't really a problem for me though because I have more of a possesion playstyle. So for me the biggest letdwon would be 3* skill moves.
Passing on this card is just average, the ball pretty much goes where it's supposed to, nothinng special.
3* skill moves