By Zach Koons Baltimore QB coach James Urban is confident that the former MVP is wholly focused on his on-field performance. View the original article to see embedded media. Ravens quarterback Lamar Jackson is among the league’s top players seeking an extension as he heads into the final year of his rookie contract. However, he has yet to sign on the dotted line, leading many to wonder if the lack of a long-term deal for the former league MVP will lead to tension in Baltimore. But one Ravens assistant isn’t worried about the contract negotiations affecting Jackson’s ability to lead the team. S…