Patient autograph seekers lined one side of the driveway at the Yankees’ minor league complex here hoping Alex Rodriguez might stop to sign a bat or ball. Media members lined the other side waiting to hear what the embattled slugger would say about the prospect that Major League Baseball is looking to suspend him. Both went away with nothing. Rodriguez finished three hours of work rehabbing from left hip surgery, got into his black SUV and drove away. He never hesitated or seemed to consider stopping. Rodriguez has been thrust back to the forefront of the news because Anthony Bosch has reportedly agreed to cooperate with MLB’s investigation into players who allegedly received performance-enhancing drugs from Bosch’s Biogenesis anti-aging clinic in South Florida. Rodriguez and the Brewers’ Ryan Braun are two of more than 20 players who have been tied to Biogenesis since January, when clinic documents with their names surfaced. A report said MLB might seek to suspend Rodriguez 100 games, but A-Rod offered nothing on Wednesday. Rodriguez showed up in the early afternoon at the complex where he has been rehabbing for about the past five weeks. He had left hip surgery on Jan. 16. He is hoping to return to the Yankees some time after the All-Star break, but the team hasn’t given a timetable even for beginning a minor league rehab assignment. Rodriguez did agility drills for about 10 minutes and then went to the batting cages to do tee and soft toss work. He returned to the field and took ground balls — first on his knees and then standing — but made no throws across the diamond.