The signing marks a full-circle moment for Beckham, whose name became synonymous with the Giants during one of the most electrifying starts to a career in recent NFL history. Selected 12th overall in the 2014 NFL Draft out of LSU, Beckham immediately emerged as one of football’s biggest stars, winning Offensive Rookie of the Year honors and becoming a three-time Pro Bowler during his first five seasons in New York. His return also reunites him with head coach John Harbaugh, who coached Beckham during his stint with the Baltimore Ravens. That connection appeared to play a significant role in keeping the door open. Earlier this year, Harbaugh acknowledged that the two had remained in regular contact. “He and I do talk. We do text,” Harbaugh said during the NFL league meetings. “We maintain a really great relationship. He’s one of my favorite people in the world.” The move comes after Beckham spent much of the offseason making it clear that a Giants return was at the top of his wish list.…