Hyundai is set to replace Alliance Tyres, a subsidiary of jersey sponsor Yokohama Tyres, after just one year.
In total, the Hyundai Chelsea sleeve deal, which is set to kick off with the start of the 2018-2019 season, is estimated to be worth £50m, i.e. £10m per season. This puts it right at the top of the Premier League charts in terms of value - it's worth almost double what Nexen Tire pay Manchester City, for example.