Free-agent reliever Greg Burke is headed to the Colorado Rockies on a minor league deal with a spring-training invite, a source told ESPNNewYork.com. Burke, 31, was removed from the 40-man roster last month and subsequently became a free agent. He had a 5.68 ERA in 32 relief appearances for the Mets last season. The Mets and Blue Jays also were believed to have made offers.