George Kittle relieved contract extension negotiation with 49ers was stress-free

SAN FRANCISCO — George Kittle is a happy man.In his first public comments since finalizing a four-year contract extension with the 49ers worth $76.4 million last Tuesday, the tight end shared his emotions in an exclusive interview with NBC Sports Bay Area."I am very happy that it is done," Kittle said. "My last contract extension went into training camp and that is a little bit stressful."The All-Pro kicked off the weekend at the de Young Museum in Golden Gate Park, where almost 250 children received free vision screening provided by Zenni. Several of the children were invited to attend a "chalk talk" with Kittle, where they learned how to draw up a few of the 49ers' plays.The children received a complimentary pair of EyeQLenz glasses that help protect against blue light, UV light, and infrared light, and were able to meet Kittle and take pictures after the event.Kittle always has a positive attitude, but Kittle seemed even more enthusiastic with the business side of the game behind him. With contract talks in the review mirror, he can focus on what needs to happen on the field."I was just appreciative to get it done now," Kittle said. "Because the weight on your shoulders and...