But if Murray left spring training to attend the combine - a move the A's and Major League Baseball reportedly would have to approve - it likely would send a message to his new A's teammates about his priorities.
At a listed 5-foot-10, 195 pounds, Murray is very small for an National Football League quarterback.
ESPN draft experts Mel Kiper and Todd McShay have noted that Murray could be a first-round pick, and ESPN's Chris Mortensen reported Wednesday that Murray was getting "first-round feedback" about the NFL.
According to a source, Murray declaring for the draft is not considered to be contractually significant.
Henry Schulman and Susan Slusser, who cover the Giants and A's respectively, reported Wednesday afternoon that Murray will have to pick between the two sports due to "the demands of learning and playing quarterback in the National Football League".
Murray was the Heisman Trophy victor after signing a contract with the Athletics in June that allowed him to play for the Sooners for one final season. "I know he signed up to play baseball, but he is a dominant football player and I would take him with the first pick". Some pundits have him as a possible first-round pick. "You can be pro in one sport and amateur in the other, as we know".
The Cardinals have the first overall pick and the No. 33 pick. But it's finally becoming real as the final days for him to make a decision are on the horizon. While baseball contracts are generally larger and feature more guarantees than football, the chances of not succeeding in baseball are relatively high. For instance, 16-year veteran Josh McCown has made $49 million over the course of his career after being a third-round pick in 2002.