The Browns placed veteran receiver Marquise Goodwin on the non-football illness list Friday, and now we know why. Blood clots in his lungs and legs will force Goodwin to miss the start of training camp, the team announced. Goodwin, who is entering his 10th season, began experiencing discomfort in his legs and complained of shortness of breath during organized team activities this spring. A check-up revealed the clots. “It was really alarming at first because I’ve experienced injury throughout my career, but it’s never been anything like this that could turn into something detrimental if it’s not taken care of,”...