/usr/lib/x86_64-linux-gnu/libglobus_callout.so is in libglobus-callout-dev 3.13-3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libglobus_callout.so.0.3.13
/usr/lib/x86_64-linux-gnu/libglobus_callout.so.0.3.13