Casual water on green | Golf Monthly

Correct - except the 'can' in 'can place' should be 'must'!

Here's the wording - from 25-1 b. Relief
...
On the Putting Green: If the ball lies on the putting green, the player must lift the ball and place it, without penalty, at the nearest point of relief that is not in a hazard or, if complete relief is impossible, at the nearest position to where it lay that affords maximum available relief from the condition, but not nearer the hole and not in a hazard. The nearest point of relief or maximum available relief may be off the putting green.