He did get the ball first. Commentators are also saying that's why it wasn't a foul. But probably could be a foul because of how strong the follow through was.
If only we could combine Mandzu's big game clutch gene and grinta with Higgy's finishing ability against minnows... (we'd have a Cavani @zizinho @Fr3sh)
Mandzu vs Higuain goals in all competitions since 2010/11 (not including time before that cuz Mario played in Croatia)
2010-11 8 vs 13
2011-12 12 vs 26
2012-13 22 vs 18
2013-14 26 vs 24
2014-15 20 vs 29
2015-16 13 vs 38
2016-17 11 vs 32
2017-18 6 vs 12
Total: 118 vs 192
Even if you exclude the last 2 seasons, it's 101 vs 148.