Chelsea could have a big decision to make in the transfer window this summer. The Blues have already brought Tosin Adarabioyo in from Fulham, and it looks like they want to sign more players. However, before Chelsea do that in one area, they may need to sell someone. The striker position looks like the next thing that could be addressed. The club are reportedly interested in signing Aston Villa’s Jhon Duran. They could also bring in a new left-back in the transfer window, with it being claimed that they are really keen on Bournemouth’s Milos Kerkez. One in, one out at ChelseaThiago Silva has l…