Premier League clubs are back in training after the coronavirus-enforced lockdown. <a href="https://www.thenational.ae/sport/football/premier-league-season-is-set-to-restart-on-june-17-1.1025982">Before the season kicks back into gear on June 17</a>, we will continue our look back on 30 years of football kits from the current 20 top-flight English clubs. There have been some stunning works of wonder over the years ... as well as truly heinous crimes committed in the name of sporting fashion. Next in our series is Sheffield United, who are set to take on Aston Villa on the restart's opening day, so take a trip down memory lane and click on the arrows or simply swipe to look at the next image.