Chelsea are starting to get busy in this transfer window. The Blues confirmed on Saturday that they had agreed a deal with Palmeiras to sign teenage winger Estevao Willian. It comes after Chelsea landed Tosin Adarabioyo from Fulham on a free transfer earlier this month. According to The Athletic, they are now in talks with the representatives of Lille’s Jonathan David about a potential move this summer. And if they do go on to sign the 24-year-old, it does not look like they will stop there. Chelsea could sign young South AmericanEstevao may not be the only South American Chelsea sign during t…