Butler said Walker suffered serious head injuries in the collision and never showed any brain activity after arriving at the hospital.<br />'I just wanted to say that Tray was an incredible young man and had a very promising career ahead of him,' Butler told Reuters. 'He will be missed.'<br />Police said the driver of the SUV stayed on the scene after the collision and was cooperating with authorities. Police said no charges had been filed. <br />The Ravens star was not wearing a helmet and was dressed in all black at the time of the accident, police said. <br />He was believed to be riding the dirt bike with another NFL player, but his agent does not know the name of the that player.<br /><br /><br />Read more: http://www.dailymail.co.uk/news/article-3499662/Baltimore-Ravens-player-Tray-Walker-dies-motorcycle-accident.html#ixzz43KIqE0Yx <br />Follow us: @MailOnline on Twitter | DailyMail on Facebook
