Cannot properly resize club logo

I've downloaded a logo pack - no issues here.

I wanted to upload my own Manchester United club crest (one from the 1980s) and that loads up fine. 

What I'm having difficulty with is no matter what I do to resize the image, it remains quite small compared to other logos. I can only seem to get it so big. I've tried other club logos with the same issue.

I'm aware there's a man utd club badge you can download for FM but ideally, I wanted an old school united badge.

Any ideas on how to easily resize the logo in line with FM ones?