I have never rated Marcos Alonso particularly highly, and I have always felt we could do better on that right side, but he is turning into the definition of a clutch player - scored 2 goals in a 2-1 win away vs Spurs including a very later winner. Scored another very late goal away vs Arsenal (game eventually finished 2-2 because we were crap at holding leads last season), scored another late goal vs Arsenal this season.
That is only the big games - he saved our skin this weekend and countless of other times. He has scored 14 league goals in 7 assists in 2 seasons + 3 games, in contrast Willian has scored 25 goals in 5 seasons + 3 games.