What kind of play, be more specific. Side to side , rotational?
All rear hubs will have some play, if it is side to side and a very small amount as you say, it is the normal play in the pulley hub bearing.
If it is rotational play, then the rubber dampers between the hub and wheel are being compressed over the miles, this is normal. Excessive play , meaning like 3/8" rotational play between the pulley/hub ass'y. and the wheel would point to the dampers needing to be replaced.
"TRUE HAPPINESS IS IN THE HEART,NOT IN THE OUTSIDE FIXES!!"
WITH OVER 42 YEARS AS A MOTORCYCLE TECHNICIAN/HI-PO SHOP OWNER I AM A PURVEYOR OF FACT NOT FICTION!
"WE LIVE OUR LIVES IN CHAINS NEVER KNOWING WE HAD THE KEY"