Ryan Gosling, who’d been set to star in the new version of Logan’s Run, is off the picture, according to Vulture.  Gosling got involved with the production at the same time as director Nicolas Winding Refn, with whom he worked on Drive (see "'Logan's Run' Starts Over").  Vulture claims Refn is still involved. 

The remake has been through a number of versions in the last decade, including a Bryan Singer version (see "Bryan Singer to Remake 'Logan’s Run'"), so it wouldn’t really be a surprise if this one fell apart too.