Chelsea have ended their search for a front-of-shirt sponsor by agreeing a one-year deal with internet financial platform company Circle.The club has been in talks with the American-based firm for several months and while the size of the investment remains undisclosed, sources have told The Athletic it is the going rate for a top Premier League club. Chelsea were looking in the region of £50-60million ($67.9m-$81.5m) a year.While the initial contract is for the remainder of the season, there is an option to extend it for longer included in the agreement, according to club sources.USDC will now be displayed on the front of the men’s, women’s and academy shirts in all competitions from now on, starting with the matches this weekend. That means it will be seen for the first time at Chelsea men’s Premier League game at home to Brighton & Hove Albion on Sunday.USDC, according to its website, “is a stablecoin issued by Circle, fully reserved by cash and cash equivalents for 1:1 redeemability with US dollars. It enables fast, low-cost, and accessible global transactions via blockchain technology.” It stands for “US Dollar Coin”.Who actually runs Chelsea?The sponsorship will give another boost to the club’s financial figures, although Chelsea’s number of global partners has already been on the increase.