In all honesty, he's hardly put a foot wrong in his last few outings.
Since his shocking miss against Astana, he's been fine. AZ Alkmaar sub, Wolves FA Cup, Tranmere sub, Watford sub.
Unfortunately, he trashed his own season by offering so little in attack in his starts against Astana and Rochdale in September. After that, Solskjaer didn't trust him.
Chong needed to establish himself, if not ahead of Dan James, then certainly as a realistic option who could contribute goals and assists, this season. Instead, we will be looking to buy attacking players in the summer.
With more strength and some confidence, he might be a decent player. Or he might not. I've really got no idea how he will develop.