I really don’t think so unless player leaves in a disrespectful way. Also fans follow players individually not just because they play for their club. I don’t follow every Arsenal player, but I do follow Ramsey still because I love the bloke and wish him the best. Same would be if Laca left today. Same for Auba and Hector. If I like a player not only as a player but as a person I will support them even when they leave, if they haven’t done anything to wrong the club or disrespect the fans.