Change 1: Modified the collar. I don't like the way it separates at the shoulder and becomes an entirely different collar at the back - different width, no central white stripe, so I made the entire collar appear as it does at the front.
Change 2: Sponsor. As if having JUST EAT on a shirt isn't bad enough, it's got a big red square behind it. The colour of that other team from the East Midlands that Derby fans all despise. Getting rid of that seems like a no-brainer, but apparently no one at Derby thought it was a problem.