Occupier of temporary shelter outside centre of Gdansk (6)
I believe the answer is:
Here is my best explanation:
'occupier' is the definition.
(tenant is a kind of occupier)
'temporary shelter outside centre of gdansk' is the wordplay.
'temporary shelter' becomes 'tent' (I've seen this before).
'outside' indicates putting letters inside.
'centre of' says to take the centre.
The central letters of 'gdansk' are 'an'.
'tent' placed around 'an' is 'TENANT'.
'of' is the link.
(Other definitions for tenant that I've seen before include "Anne Bronte's novel 'The ...... of Wildfell Hall'", "Rent payer", "his flat?", "one paying rent", "Renting occupant", "Someone who pays rent", "One occupying rented property", "Leaseholder", "Renter of property" and "One who pays rent".)