According to Bart Hubbuch of the New York Post, the Mets have designated infielder Andy Green for assignment.
The move was made in order to clear roster space for left-hander Pat Misch, who was called up in a corresponding move. Green, 32, was promoted to the bigs earlier this week and went 1-for-4 with one walk. He had a .272/.355/.404 batting line in 151 minor league at-bats this season. He's not likely to draw much interest from opposing clubs.