Play in output shaft.A904

If you can find a bushing puller it's a 15 min job to do the bushing and seal both without having to disassemble anything.
Just remove the driveline, pop the seal out, pull the bushing and put the new stuff in.
Of course you want to make sure the yoke is ok as well.

The biggest problem if it isn't leaking is that the driveline can get a little off center and cause a vibration.