Place the turkey in the food processor and pulse a few times to roughly chop. Continue pulsing for 30 seconds until the chicken is finely chopped. *If you turn on the food processor, the turkey will turn into a paste.
Combine the lemon juice, mayonnaise, salt, pepper, and creole seasoning in a large bowl. Whisk until smooth.
Add the turkey and celery to the bowl and fold to combine.