Hi Gorndt and welcome to the forum.
If you have an AG and you interact with it, the chances are it WILL talk, there are very few that don't and if any parrot is gonna talk then it will be the AG - they are known as one of the best parrot species for talking, hence why they are so popular as pets. Be sure to talk and interact with you bird often, pronounce your words well and repeat often. Don't expect too much talking (if any) until your bird is between 1-2 yrs of age. Most of all enjoy your grey and remember, if it doesn't talk it isn't the end of the world so long as he/she is happy and healthy.