Er.... naw.
Turkey is in its own wee special Customs Union, off to one side - such as Uk might possibly aspire to also have?
Turkey is not in THE Customs Union.
sorry I can’t share any optimism - possibly because I think most of the new jobs are on shit terms, no possibility of progress, little chance of sufficient remuneration to plan for a future or a family, no pension, no sick pay, little future etc etc.... cannae be arsed repeating past aired concerns further.