The Miami Marlins released right-hander Edinson Volquez on Wednesday, opening an extra spot on the 40-man roster in advance of the Rule 5 draft on Thursday. President of baseball operations Michael Hill said the Marlins are open to bringing Volquez, 34, back on a minor league contract, which would allow him to continue his rehabilitation process with Miami’s trainers and medical personnel. “The offer was extended,” Hill said. “We’d like to re-sign him and keep him in the fold and continue his rehab. We’ll see by the end of the summer where he’s at with his rehab.” Volquez had Tommy John surgery to repair the torn ulnar collateral ligament in his right elbow and is expected to miss at least most of the 2018 season. Either way, the Marlins owe Volquez $13 million next season, the second year of a two-year, $22 million contract he signed last offseason. The only Marlin with a higher 2018 salary is third baseman Martin Prado at $13.5 million.