Harvey said during a radio interview while the Mets were playing the Washington Nationals on Wednesday he wanted to try to pitch this season after throwing a bullpen session, where his fastball clocked in the low-to-mid 90's.
Harvey underwent Tommy John surgery last October after partially tearing the ulnar collateral ligament in his right elbow.
"He wants to try to get back here to help," Collins said to ESPN.com. "And I explained to him, 'I understand that. But ... you have got to understand the big picture. And the big picture is 2015. So back off."
Collins also asked Harvey not to do interviews during games.
- Scooby Axson