Jon Lester will not make his scheduled start for the Boston Red Sox on Wednesday.
Lester has not yet been traded, but Boston appears to be taking a cautious approach.
"No deal yet," a major league source said. "He could still pitch Friday for the Red Sox against the Yankees."
Brandon Workman will be recalled from Triple-A to start in Lester's place Wednesday.
"I think in light of all the uncertainty surrounding Jon Lester, it's probably in everyone's best interest that he not make that start, so Brandon will be recalled," John Farrell said. "There will be a corresponding move roster-wise at some point tomorrow."