Get a food-safe 5-gallon pail. Clean thoroughly.
Place bucket in sink.
Place turkey in bucket.
Turn on a thin stream of cold (NOT hot!) water, allow it to run onto
the turkey. (If the bucket is tall, might have to use the sprayer with
a rubber band on the lever.)
Check every hour or so.

Our sink has a divider between the basins that is lower than the top of
the sink. So I just clean one basin thoroughly, put the turkey in the
sink, turn on the water.

If the stream of water can be directed into the cavity of the turkey,
so much the better. That's the last to thaw.

Or just put the turkey in the bucket, fill with cold water, change it
every half hour or so.

Best -- Terry