Chelsea may want to react quickly if they hope to sign a £20m-rated transfer target this summer because a Premier League rival has blinked first by submitting an opening bid. While Chelsea have proven they’re willing to flex their muscles with big-money signings in recent years, there’s still value in the window if you look in the right place. The Blues have already confirmed their first signing of the summer, which is a free transfer and becomes official on 1 July. Tosin Adarabioyo, 26, has been announced as a new Chelsea player and the centre-back joins to try bolster the defence. READ MORE:…