By Daniel Chavkin The superstar forward teased his return on social media. View the original article to see embedded media. Cristiano Ronaldo may be returning to Manchester United soon. On Instagram, when a fan page acknowledged Ronaldo’s absence from the team, the forward responded with a simple yet effective reply. “Sunday, the King plays,” Ronaldo wrote, via Reuters. Manchester United is scheduled to play Spanish side Rayo Vallecano in a friendly on Sunday, a match which would be Ronaldo’s first under new manager Erik ten Hag. Ronaldo didn’t play in Manchester United’s preseason tour due to…