Peeps here know that I'm not a fan, but the final killer pass is the best trick in his locker. Loads of examples of him (usually coming off the bench and then) finding killer pass on the edge of the area.
Examples:
Citeh away won 2-1 ran through tiring MF and pass to Eriksen to score winner;
Leics home lost 0-1, but Harry one on one that bit the bar, at 0-0, frmo his pass;
Leics away lost 2-1, pass to H for our goal.
I wouldn't tend to use him unless it's from the bench.
I didn't see the game last night. Peeps here saying could have put Son away. I've thought for a long time that he often doesn't pass to Son when latter well placed. I CBA to check the stats, but it wouldn't surprise me if very few of Son's goals were from EL assists.